Intake plenum issues?

[Lakerunner]

I recently changed my could and spark plugs, when I was tightening one of the long screws on the plenum (middle one) I heard a crack and the screw spun freely. Does anyone know if I can just replace the lower plenum or is it worse?

Thanks!

 

[Chris]

You can just replace the lower intake plenum. Sounds like you just tightened it too much and it stripped.