Zinc Additive for Flat Tappet break-in?

Maybe I have a more knowledgable dealer then....the guy I talk to and buy from is really up on the subject cause he has a Chevelle and he's aware of the problem and has done some research and talked to higher up's from Brad Penn. I know Chuck from Best Machine endorses and sells Brad Penn and my local Circle Track engine builder pushes Joe Gibbs.....so either one is okay by me.