UPDATE
Received my Noss cool head from F.A.S.T. Washed everything in the sink and started getting ready to assemble. Found out the right side cylinder stud holes are not tapped as far down as the left cylinders holes. That explains the height difference.
So I threw the cylinders back on the bike to test fit the head. Snugged down all 8 cylinder nuts evenly with a wrench. Took the Noss head base and tried dropping it down onto the cylinders. Did not fit smoothly. So then I fit the head base over each cylinder by them selves. Each cylinder's studs lined up with holes in the head base and fit nicely. So the cylinders fit the head when they're apart, But when they're both together mounted on the case the head does not want to slide over studs.
I loosened all the cylinder base mounting nuts till they were just finger tight and head still doesn't want to fit smoothly. I'm sure a few whacks would get it on but I do not want to do that with this brand new head. Looks like I may be sending cylinders back. Any thing else I should check before I do??
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