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i use the rubber ones but i have some M/T's covers on mine and you can crank them down very tight without worrying about warping the V/C's.




Try that with stock stamped steel valve covers and you'll get the results I described.



very true.

I run the MTs also wiit hthe rubber gasket. i run the rubber cause i have a solid cam and the rubber is better for removing VCs for lash adjustment. the corks gets hard and breaks after a short while.