[supergonzo]

heres another one
The rocker on far left is full roller rocker, then a roller tip rocker , then a 1.65 rocker , then a 1.5 rocker.
Can you see any size difference between the 1.5 and the 1.65??

You could be right, but I never measured the difference in gaskets, but The rockers never hit the valve covers either way. As you can see the 1.5 and the 1.65's are identical in size.