Agreed, not much aftermarket Modifications "bolt on". For me it's just easier to throw a couple washers on top and move on then cutting the ends of the studs off and boogering up the threads and trying to make them nice again but again like you said I'm moving on. I guess my point was that if hughes is doing hundreds of these kind of applications it would seem like if 50 out of the 51 heads were having this problem they would say something? or if Edelbrock heads have deeper hole compared to stock heads yada yada....