diff --git a/src/store/execution/generate3dExecutor.ts b/src/store/execution/generate3dExecutor.ts
index 1c95b7be..6ac9322c 100644
--- a/src/store/execution/generate3dExecutor.ts
+++ b/src/store/execution/generate3dExecutor.ts
@@ -70,7 +70,7 @@ export async function executeGenerate3D(
     error: null,
   });
 
-  const runOnce = async (modelToUse: SelectedModel): Promise<void> => {
+  const runOnce = async (modelToUse: SelectedModel, parametersOverride?: Record<string, unknown>): Promise<void> => {
     const provider = modelToUse.provider;
     const headers = buildGenerateHeaders(provider, providerSettings);
 
@@ -78,7 +78,7 @@ export async function executeGenerate3D(
       images,
       prompt: promptText || "",
       selectedModel: modelToUse,
-      parameters: nodeData.parameters,
+      parameters: parametersOverride ?? nodeData.parameters,
       dynamicInputs,
       mediaType: "3d" as const,
     };
@@ -188,7 +188,9 @@ export async function executeGenerate3D(
     nodeId: node.id,
     primary: primaryModel,
     fallback: nodeData.fallbackModel,
+    fallbackParameters: nodeData.fallbackParameters,
     updateNodeData,
     runOnce,
+    clearOutput: { outputVideo: null },
   });
 }
diff --git a/src/store/execution/generateAudioExecutor.ts b/src/store/execution/generateAudioExecutor.ts
index f2dbe30c..b84c332c 100644
--- a/src/store/execution/generateAudioExecutor.ts
+++ b/src/store/execution/generateAudioExecutor.ts
@@ -79,7 +79,7 @@ export async function executeGenerateAudio(
     error: null,
   });
 
-  const runOnce = async (modelToUse: SelectedModel): Promise<void> => {
+  const runOnce = async (modelToUse: SelectedModel, parametersOverride?: Record<string, unknown>): Promise<void> => {
     const provider = modelToUse.provider;
     const headers = buildGenerateHeaders(provider, providerSettings);
 
@@ -87,7 +87,7 @@ export async function executeGenerateAudio(
       images: [],
       prompt: text,
       selectedModel: modelToUse,
-      parameters: nodeData.parameters,
+      parameters: parametersOverride ?? nodeData.parameters,
       dynamicInputs,
       mediaType: "audio" as const,
     };
@@ -219,7 +219,9 @@ export async function executeGenerateAudio(
     nodeId: node.id,
     primary: nodeData.selectedModel,
     fallback: nodeData.fallbackModel,
+    fallbackParameters: nodeData.fallbackParameters,
     updateNodeData,
     runOnce,
+    clearOutput: { outputAudio: null },
   });
 }
diff --git a/src/store/execution/generateVideoExecutor.ts b/src/store/execution/generateVideoExecutor.ts
index 3bb04cb9..9394a04d 100644
--- a/src/store/execution/generateVideoExecutor.ts
+++ b/src/store/execution/generateVideoExecutor.ts
@@ -85,7 +85,7 @@ export async function executeGenerateVideo(
     error: null,
   });
 
-  const runOnce = async (modelToUse: SelectedModel): Promise<void> => {
+  const runOnce = async (modelToUse: SelectedModel, parametersOverride?: Record<string, unknown>): Promise<void> => {
     const provider = modelToUse.provider;
     const headers = buildGenerateHeaders(provider, providerSettings);
 
@@ -93,7 +93,7 @@ export async function executeGenerateVideo(
       images,
       prompt: text,
       selectedModel: modelToUse,
-      parameters: nodeData.parameters,
+      parameters: parametersOverride ?? nodeData.parameters,
       dynamicInputs,
       mediaType: "video" as const,
     };
@@ -224,7 +224,9 @@ export async function executeGenerateVideo(
     nodeId: node.id,
     primary: nodeData.selectedModel,
     fallback: nodeData.fallbackModel,
+    fallbackParameters: nodeData.fallbackParameters,
     updateNodeData,
     runOnce,
+    clearOutput: { outputVideo: null },
   });
 }
diff --git a/src/store/execution/nanoBananaExecutor.ts b/src/store/execution/nanoBananaExecutor.ts
index 2718ca82..ef857576 100644
--- a/src/store/execution/nanoBananaExecutor.ts
+++ b/src/store/execution/nanoBananaExecutor.ts
@@ -91,7 +91,7 @@ export async function executeNanoBanana(
 
   // Inner runOnce: performs the actual fetch/process/history work for a given model.
   // Extracted so runWithFallback can invoke it twice (primary, then fallback) if needed.
-  const runOnce = async (modelToUse: SelectedModel): Promise<void> => {
+  const runOnce = async (modelToUse: SelectedModel, parametersOverride?: Record<string, unknown>): Promise<void> => {
     const provider = modelToUse.provider;
     const headers = buildGenerateHeaders(provider, providerSettings);
 
@@ -110,7 +110,7 @@ export async function executeNanoBanana(
       useGoogleSearch: nodeData.useGoogleSearch,
       useImageSearch: nodeData.useImageSearch,
       selectedModel: modelToUse,
-      parameters: nodeData.parameters,
+      parameters: parametersOverride ?? nodeData.parameters,
       dynamicInputs: sanitizedDynamicInputs,
     };
 
@@ -274,7 +274,9 @@ export async function executeNanoBanana(
     nodeId: node.id,
     primary: primaryModel,
     fallback: nodeData.fallbackModel,
+    fallbackParameters: nodeData.fallbackParameters,
     updateNodeData,
     runOnce,
+    clearOutput: { outputImage: null },
   });
 }