thanks for the response Pat. The nuts are new and before the rebuild, this eng had some valvetrain noise. Upon inspection, I found loose rocker arms. The same rocker nuts that are loose today. So I bought new nuts and that seemed to work. Then I took this motor apart for a rebuild. So I have only used these nuts once before. Maybe I should purchase poly locks just to be safe. Since the lash is already set, do you think that if I clean the studs and apply locktite to the tops of the studs that it will work into the threads. Sounds stupid but what do you think? I'm trying to avoid turning the motor anymore as I don't want to wipe off anymore cam lube. thanks