diff --git a/client/src/components/ControlPanel.vue b/client/src/components/ControlPanel.vue
index 1ec1be0d..7d17269b 100644
--- a/client/src/components/ControlPanel.vue
+++ b/client/src/components/ControlPanel.vue
@@ -68,8 +68,11 @@ export default {
       return (this.representation && Math.ceil(this.representation.getPropertyDomainByName('windowWidth').max)) || 0;
     },
     autoWindow() {
-      return this.currentViewData.autoWindow
-        || Math.ceil((this.winMax * 0.3) / 10) * 10;
+      return this.currentViewData.autoWindow || this.winMax;
+    },
+    autoLevel() {
+      return this.currentViewData.autoLevel
+        || Math.ceil((this.levMax * 0.4) / 10) * 10;
     },
     levMin() {
       return (this.representation && this.representation.getPropertyDomainByName('windowLevel').min) || 0;
@@ -77,10 +80,6 @@ export default {
     levMax() {
       return (this.representation && Math.ceil(this.representation.getPropertyDomainByName('windowLevel').max)) || 0;
     },
-    autoLevel() {
-      return this.currentViewData.autoLevel
-        || Math.ceil((this.levMax * 0.2) / 10) * 10;
-    },
   },
   watch: {
     window(value) {
@@ -175,6 +174,8 @@ export default {
     updateWinLev() {
       this.window = this.autoWindow;
       this.level = this.autoLevel;
+      this.representation.setWindowWidth(this.window);
+      this.representation.setWindowLevel(this.level);
     },
     navigateToFrame(frameId) {
       if (frameId && frameId !== this.$route.params.frameId) {
@@ -577,6 +578,7 @@ export default {
                     :lock-owner="lockOwner"
                     :loading-lock="loadingLock"
                     @handleKeyPress="handleKeyPress"
+                    @switchLock="switchLock"
                   />
                 </v-col>
               </v-row>
diff --git a/client/src/components/DecisionButtons.vue b/client/src/components/DecisionButtons.vue
index 257ac8dd..78d9162c 100644
--- a/client/src/components/DecisionButtons.vue
+++ b/client/src/components/DecisionButtons.vue
@@ -37,6 +37,12 @@ export default {
       newComment: '',
       confirmedPresent: [],
       confirmedAbsent: [],
+      decisionShortcuts: {
+        U: 'u',
+        UE: 'i',
+        'Q?': 'o',
+        UN: 'p',
+      },
     };
   },
   computed: {
@@ -131,25 +137,6 @@ export default {
     if (!this.currentViewData.currentAutoEvaluation) {
       this.pollInterval = setInterval(this.pollForEvaluation, 1000 * 10);
     }
-    const decisionShortcuts = {
-      u: 'U',
-      i: 'UE',
-      o: 'Q?',
-      p: 'UN',
-    };
-    window.addEventListener('keydown', (event) => {
-      if (
-        (this.$refs.commentInput && !this.$refs.commentInput.isFocused)
-          && Object.keys(decisionShortcuts).includes(event.key)
-      ) {
-        const code = decisionShortcuts[event.key];
-        if (this.options.map(
-          (option) => option.code,
-        ).includes(code)) {
-          this.handleCommentSave(decisionShortcuts[event.key]);
-        }
-      }
-    });
   },
   beforeUnmount() {
     clearInterval(this.pollInterval);
@@ -176,6 +163,9 @@ export default {
           (txt) => txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase(),
         );
     },
+    switchLock() {
+      this.$emit('switchLock', this.currentViewData.experimentId, null, true);
+    },
     getCurrentChipState(artifact) {
       // this function determines the styling of the four chip states.
       // four states of a chip are:
@@ -451,6 +441,10 @@ export default {
             style="text-align: center"
           >
             <v-btn
+              v-mousetrap="[
+                { bind: decisionShortcuts[option.code],
+                  handler: () => handleCommentSave(option.code) },
+              ]"
               :color="option.color"
               @click="handleCommentSave(option.code)"
             >
@@ -487,7 +481,7 @@ export default {
             :loading="loadingLock"
             :disabled="loadingLock"
             color="primary"
-            @click="switchLock(experimentId, null, force=true)"
+            @click="switchLock"
           >
             {{ lockOwner ?"Steal edit access" :"Claim edit access" }}
           </v-btn>
diff --git a/miqa/core/models/project.py b/miqa/core/models/project.py
index bfa8d62b..9869b934 100644
--- a/miqa/core/models/project.py
+++ b/miqa/core/models/project.py
@@ -1,5 +1,6 @@
 from uuid import uuid4
 
+from django.apps import apps
 from django.contrib.auth.models import User
 from django.core.exceptions import ValidationError
 from django.db import models
@@ -111,6 +112,13 @@ def update_group(self, group_name, user_list):
         for previously_permitted_user in old_list:
             if previously_permitted_user.username not in user_list:
                 remove_perm(group_name, previously_permitted_user, self)
+                if 'reviewer' in group_name:
+                    locked_experiments = apps.get_model('core', 'Experiment').objects.filter(
+                        project=self, lock_owner=previously_permitted_user
+                    )
+                    for locked_experiment in locked_experiments:
+                        locked_experiment.lock_owner = None
+                        locked_experiment.save()
 
         for username in user_list:
             new_permitted_user = User.objects.get(username=username)