diff --git a/torn-attribute-tracker.user.js b/torn-attribute-tracker.user.js
index d9c0c51..062b9f0 100644
--- a/torn-attribute-tracker.user.js
+++ b/torn-attribute-tracker.user.js
@@ -315,7 +315,7 @@
       this.mode = opts.initialMode || 'free';
       if (this.mode === 'free') {
         root.style.bottom = '20px';
-        root.style.right = '20px';
+        root.style.left = '20px';
         if (opts.initialPos && (opts.initialPos.x || opts.initialPos.y)) {
           root.style.transform = 'translate(' + opts.initialPos.x + 'px, ' + opts.initialPos.y + 'px)';
         }
@@ -327,7 +327,7 @@
       this.mode = mode;
       if (!this.root) return;
       this.root.style.transform = ''; this.root.style.top = ''; this.root.style.bottom = ''; this.root.style.left = ''; this.root.style.right = '';
-      if (mode === 'free') { this.root.style.bottom = '20px'; this.root.style.right = '20px'; }
+      if (mode === 'free') { this.root.style.bottom = '20px'; this.root.style.left = '20px'; }
       else if (anchorInfo && anchorInfo.canAnchor) { this._positionAnchored(anchorInfo.rect); }
       else { this.root.style.top = '20px'; this.root.style.left = '50%'; this.root.style.transform = 'translateX(-50%)'; }
     }
@@ -446,87 +446,102 @@
 
   function start() {
     if (window.__tat_started) return; window.__tat_started = true;
-    const store = new Store({ storage: localStorage, onWarn: function (m) { console.warn(m); } });
-    const prefs = store.getPrefs();
+    try {
+      const store = new Store({ storage: localStorage, onWarn: function (m) { console.warn(m); } });
+      const prefs = store.getPrefs();
 
-    const dialog = new Dialog({
-      onTargetChange: function (v) {
-        const a = currentAttribute(); if (!a) return; store.setTarget(a.attr, v); render();
-      },
-      onModeChange: function (m) { store.setMode(m); prefs.mode = m; applyMode(); },
-      onPosChange: function (pos) { store.setPos(pos); },
-      onClose: function () { dialog.destroy(); },
-    });
+      // State that applyMode() and render() may touch on first call.
+      // Declared up-front to avoid TDZ ReferenceError if applyMode()'s
+      // anchor-miss branch fires before the natural declaration point.
+      let lastSnapshot = null;
+      let lastAttr = null;
+      let lastDelta = 0;
+      let anchorError = null;
 
-    dialog.mount({ initialMode: prefs.mode, initialPos: prefs.pos });
-    applyMode();
+      // One-time migration: dialog now defaults to bottom-left, so reset any
+      // previously-saved position from the bottom-right era.
+      if (prefs.pos && (prefs.pos.x !== 0 || prefs.pos.y !== 0)) {
+        console.info('[tat] resetting dialog position to new bottom-left default');
+        prefs.pos = { x: 0, y: 0 };
+        store.setPos(prefs.pos);
+      }
 
-    let lastSnapshot = null;
-    let lastAttr = null;
-    let lastDelta = 0;
-    let anchorError = null;
+      const dialog = new Dialog({
+        onTargetChange: function (v) {
+          const a = currentAttribute(); if (!a) return; store.setTarget(a.attr, v); render();
+        },
+        onModeChange: function (m) { store.setMode(m); prefs.mode = m; applyMode(); },
+        onPosChange: function (pos) { store.setPos(pos); },
+        onClose: function () { dialog.destroy(); },
+      });
 
-    function snapshot() {
-      const a = currentAttribute();
-      if (!a) return { error: "Couldn't read attribute — Torn may have updated the page." };
-      lastAttr = a.attr;
-      const summary = store.getSummary(a.attr);
-      return {
-        attr: a.attr, gym: a.gym, current: a.current,
-        target: store.getTarget(a.attr), perTrain: lastDelta, summary: summary,
-        warn: store._saveDisabled ? 'saving disabled this session' : null,
-        anchorError: anchorError,
-      };
-    }
+      dialog.mount({ initialMode: prefs.mode, initialPos: prefs.pos });
+      applyMode();
 
-    function render() { lastSnapshot = snapshot(); dialog.render(lastSnapshot); }
+      function snapshot() {
+        const a = currentAttribute();
+        if (!a) return { error: "Couldn't read attribute — Torn may have updated the page." };
+        lastAttr = a.attr;
+        const summary = store.getSummary(a.attr);
+        return {
+          attr: a.attr, gym: a.gym, current: a.current,
+          target: store.getTarget(a.attr), perTrain: lastDelta, summary: summary,
+          warn: store._saveDisabled ? 'saving disabled this session' : null,
+          anchorError: anchorError,
+        };
+      }
 
-    function applyMode() {
-      if (prefs.mode === 'anchored') {
-        const el = findAnchorElement();
-        if (el) {
-          const rect = el.getBoundingClientRect();
-          dialog.setMode('anchored', { canAnchor: true });
-          dialog._positionAnchored(rect);
-          if (typeof ResizeObserver !== 'undefined') {
-            const ro = new ResizeObserver(function () {
-              if (prefs.mode === 'anchored') dialog._positionAnchored(el.getBoundingClientRect());
-            });
-            ro.observe(el);
+      function render() { lastSnapshot = snapshot(); dialog.render(lastSnapshot); }
+
+      function applyMode() {
+        if (prefs.mode === 'anchored') {
+          const el = findAnchorElement();
+          if (el) {
+            const rect = el.getBoundingClientRect();
+            dialog.setMode('anchored', { canAnchor: true });
+            dialog._positionAnchored(rect);
+            if (typeof ResizeObserver !== 'undefined') {
+              const ro = new ResizeObserver(function () {
+                if (prefs.mode === 'anchored') dialog._positionAnchored(el.getBoundingClientRect());
+              });
+              ro.observe(el);
+            }
+            anchorError = null;
+            return;
           }
-          anchorError = null;
+          // Anchor selector missed — don't snap to default, just keep current
+          // position and show a note.
+          anchorError = "Couldn't find the training form on this page.";
+          render();
           return;
         }
-        // Anchor selector missed — don't snap to default, just keep current
-        // position and show a note.
-        anchorError = "Couldn't find the training form on this page.";
-        render();
-        return;
+        anchorError = null;
+        dialog.setMode('free');
       }
-      anchorError = null;
-      dialog.setMode('free');
-    }
 
-    render();
+      render();
 
-    let pending = false;
-    const observer = new MutationObserver(function () {
-      if (pending) return;
-      pending = true;
-      requestAnimationFrame(function () {
-        pending = false;
-        const a = currentAttribute();
-        if (a && (a.attr !== lastAttr || a.current !== (lastSnapshot && lastSnapshot.current))) render();
+      let pending = false;
+      const observer = new MutationObserver(function () {
+        if (pending) return;
+        pending = true;
+        requestAnimationFrame(function () {
+          pending = false;
+          const a = currentAttribute();
+          if (a && (a.attr !== lastAttr || a.current !== (lastSnapshot && lastSnapshot.current))) render();
+        });
       });
-    });
-    observer.observe(document.body, { childList: true, subtree: true, characterData: true });
+      observer.observe(document.body, { childList: true, subtree: true, characterData: true });
 
-    const prev = (currentAttribute() && currentAttribute().current) || 0;
-    startRequestInterceptor({
-      prevValue: prev, currentAttr: lastAttr,
-      onTrain: function (e) { store.recordTrain(e.attr, e.delta, e.ts); lastDelta = e.delta; render(); },
-      onParseFail: function (url) { console.warn('[tat] could not parse train response from', url); },
-    });
+      const prev = (currentAttribute() && currentAttribute().current) || 0;
+      startRequestInterceptor({
+        prevValue: prev, currentAttr: lastAttr,
+        onTrain: function (e) { store.recordTrain(e.attr, e.delta, e.ts); lastDelta = e.delta; render(); },
+        onParseFail: function (url) { console.warn('[tat] could not parse train response from', url); },
+      });
+    } catch (e) {
+      console.error('[tat] failed to start:', e);
+    }
   }
 
   // ===== self-test (only when location.hash === '#tat-test') =====