diff --git a/Resources/Prototypes/Entities/Structures/Decoration/banners.yml b/Resources/Prototypes/Entities/Structures/Decoration/banners.yml
index 1d8505533f2..d701053ec4d 100644
--- a/Resources/Prototypes/Entities/Structures/Decoration/banners.yml
+++ b/Resources/Prototypes/Entities/Structures/Decoration/banners.yml
@@ -15,16 +15,7 @@
     fixtures:
       fix1:
         shape:
-          !type:PhysShapeCircle
-          radius: 0.2
-        density: 190
-        mask:
-        - MachineMask
-        layer:
-        - Opaque
-        - MidImpassable
-        - HighImpassable
-        - BulletImpassable
+          !type:PhysShapeAabb {}
   - type: InteractionOutline
 # Frontier
   - type: Destructible
diff --git a/Resources/Prototypes/Entities/Structures/Walls/girders.yml b/Resources/Prototypes/Entities/Structures/Walls/girders.yml
index f3e9c826d3b..95b6e73ac01 100644
--- a/Resources/Prototypes/Entities/Structures/Walls/girders.yml
+++ b/Resources/Prototypes/Entities/Structures/Walls/girders.yml
@@ -17,9 +17,9 @@
           bounds: "-0.45,-0.45,0.45,0.45"
         density: 60
         mask:
-        - MachineMask
+        - TableMask # was MachineMask before Corvax Anti-Tweak
         layer:
-        - GlassAirlockLayer
+        - TableLayer # was GlassAirlockLayer before Corvax Anti-Tweak
   - type: InteractionOutline
   - type: Construction
     graph: Girder
@@ -54,6 +54,7 @@
           collection: MetalBreak
   - type: StaticPrice
     price: 10
+  - type: Climbable # Corvax Anti-Tweak
 
 - type: entity
   id: ReinforcedGirder
@@ -137,4 +138,4 @@
               acts: [ "Destruction" ]
             - !type:PlaySoundBehavior
               sound:
-                collection: MetalBreak
\ No newline at end of file
+                collection: MetalBreak
diff --git a/Resources/Prototypes/Entities/Structures/Walls/walls.yml b/Resources/Prototypes/Entities/Structures/Walls/walls.yml
index 6ed7d9ee203..f63724602c3 100644
--- a/Resources/Prototypes/Entities/Structures/Walls/walls.yml
+++ b/Resources/Prototypes/Entities/Structures/Walls/walls.yml
@@ -356,8 +356,8 @@
     key: walls
     base: ice
   - type: Reflect
-    reflectProb: 0.2
-    spread: 90
+    reflectProb: 0.3
+    spread: 40
 
 - type: entity
   parent: BaseWall
@@ -688,8 +688,8 @@
     key: walls
     base: sandstone
   - type: Reflect
-    reflectProb: 0.2
-    spread: 90
+    reflectProb: 0.3
+    spread: 40
 
 - type: entity
   parent: BaseWall
@@ -1102,8 +1102,8 @@
     key: walls
     base: necropolis
   - type: Reflect
-    reflectProb: 0.2
-    spread: 90
+    reflectProb: 0.3
+    spread: 40
 
 - type: entity
   parent: BaseWall
@@ -1295,8 +1295,8 @@
     key: cobblebricks
     base: cobblebrick
   - type: Reflect
-    reflectProb: 0.2
-    spread: 90
+    reflectProb: 0.3
+    spread: 40
 
 - type: entity
   parent: WallCobblebrick
@@ -1351,8 +1351,8 @@
     key: cobblebricks
     base: cobblebrick
   - type: Reflect
-    reflectProb: 0.2
-    spread: 90
+    reflectProb: 0.3
+    spread: 40
 
 - type: entity
   parent: WallCobblebrick
@@ -1367,5 +1367,5 @@
     key: cobblebricks
     base: cobblebrick
   - type: Reflect
-    reflectProb: 0.2
-    spread: 90
+    reflectProb: 0.3
+    spread: 40