not using studs..I'm just not sure if these covers don't seal well on stock heads or what..I would think they would seal better then stock covers since the rails are much stronger and don't bend
One would think, until you look at the rail on the heads where the gasket sits and find it's not flat. :D
Take a look and I'll bet you find it's higher in the middle than at the ends and that makes any flat valve cover have to try to bend to get sealed. (which breaks the corners off trying to get them to seal because they don't bend)
I had a 1/8 gap at each end with fabbed aluminum covers on stock cast heads, and you can check by setting the cover on without the gasket and see if it rocks forward and back.
