I just had a discussion with my engine builder today about this. He said he can't assemble it until I get him the right main studs. I told him I did and he said no, he can't install the windage tray with the studs I gave him. I said exactly! He said I should run the windage tray for what I am doing. I thanked him for the advice and said "I'll go with what my buddy John told me". :thumbsup: