diff --git a/packages/frontend/src/world/room/objects/ductRailSpotLights.ts b/packages/frontend/src/world/room/objects/ductRailSpotLights.ts
index 32b776ed11..21da2b53df 100644
--- a/packages/frontend/src/world/room/objects/ductRailSpotLights.ts
+++ b/packages/frontend/src/world/room/objects/ductRailSpotLights.ts
@@ -88,12 +88,12 @@ export const ductRailSpotLights = defineObject({
 
 		const applyLightBrightness = () => {
 			for (const light of lights) {
-				light.intensity = 2 * options.lightBrightness * WORLD_SCALE * WORLD_SCALE;
+				light.intensity = 3 * options.lightBrightness * WORLD_SCALE * WORLD_SCALE;
 				light.range = cm(300) * getLightRangeFactorByGraphicsQuality(graphicsQuality);
 			}
 			for (const lamp of lamps) {
 				const emissive = lamp.material as BABYLON.PBRMaterial;
-				emissive.emissiveIntensity = options.lightBrightness * 20;
+				emissive.emissiveIntensity = options.lightBrightness * 100;
 			}
 		};
 
diff --git a/packages/frontend/src/world/room/objects/hangingDuctRail.ts b/packages/frontend/src/world/room/objects/hangingDuctRail.ts
index 56912479bb..72356bb2c3 100644
--- a/packages/frontend/src/world/room/objects/hangingDuctRail.ts
+++ b/packages/frontend/src/world/room/objects/hangingDuctRail.ts
@@ -40,11 +40,16 @@ export const hangingDuctRail = defineObject({
 	hasCollisions: false,
 	createInstance: async ({ options, model }) => {
 		const bodyMaterial = model.findMaterial('__X_BODY__');
-		const bodyMesh = model.findMesh('__X_BODY__');
 
 		const applySize = () => {
-			bodyMesh.morphTargetManager!.getTargetByName('W')!.influence = options.width;
-			bodyMesh.morphTargetManager!.getTargetByName('H')!.influence = options.height;
+			for (const mesh of model.root.getChildMeshes()) {
+				if (mesh.morphTargetManager != null && mesh.morphTargetManager.getTargetByName('W') != null) {
+					mesh.morphTargetManager.getTargetByName('W').influence = options.width;
+				}
+				if (mesh.morphTargetManager != null && mesh.morphTargetManager.getTargetByName('H') != null) {
+					mesh.morphTargetManager.getTargetByName('H').influence = options.height;
+				}
+			}
 			model.updated();
 		};
 
diff --git a/packages/frontend/src/world/room/objects/spotLight.ts b/packages/frontend/src/world/room/objects/spotLight.ts
index 70da0d8fe1..0494d1828b 100644
--- a/packages/frontend/src/world/room/objects/spotLight.ts
+++ b/packages/frontend/src/world/room/objects/spotLight.ts
@@ -79,10 +79,10 @@ export const spotLight = defineObject({
 		applyLightColor();
 
 		const applyLightBrightness = () => {
-			light.intensity = 2 * options.lightBrightness * WORLD_SCALE * WORLD_SCALE;
+			light.intensity = 3 * options.lightBrightness * WORLD_SCALE * WORLD_SCALE;
 			light.range = cm(300) * getLightRangeFactorByGraphicsQuality(graphicsQuality);
 			const emissive = lamp.material as BABYLON.PBRMaterial;
-			emissive.emissiveIntensity = options.lightBrightness * 20;
+			emissive.emissiveIntensity = options.lightBrightness * 100;
 		};
 
 		applyLightBrightness();
diff --git a/packages/frontend/src/world/room/utility.ts b/packages/frontend/src/world/room/utility.ts
index a5dcec5e56..3c48aa7e6c 100644
--- a/packages/frontend/src/world/room/utility.ts
+++ b/packages/frontend/src/world/room/utility.ts
@@ -22,7 +22,7 @@ export function getLightRangeFactorByGraphicsQuality(quality: number) {
 	}
 }
 
-export const SYSTEM_MESH_NAMES = ['__TOP__', '__SIDE__', '__PICK__', '__COLLISION__'];
+export const SYSTEM_MESH_NAMES = ['__TOP__', '__SIDE__', '__BOTTOM__', '__PICK__', '__COLLISION__'];
 export const SYSTEM_HEYA_MESH_NAMES = ['__ROOM_WALL__', '__ROOM_SIDE__', '__ROOM_FLOOR__', '__ROOM_CEILING__', '__ROOM_TOP__', '__ROOM_BOTTOM__', '__COLLISION__'];
 
 export function yuge(scene: BABYLON.Scene, mesh: BABYLON.Mesh, offset: BABYLON.Vector3) {