Thanks to everyone for the repies. I am away from my computer and my book at this time so probably should have waited to ask the question until I had the book in front of me for reference. Now that I am thinking about it more I may have confused the fact that I have Harland Sharp rockers as well as Edelbrock heads and the rockers may be the issue with the studs. I apologize for the misstatment. It is bad when you are on vacation and all you can think about is assembling your FE. Ken