Bruce: You can learn just about anything you want to know about Omega enlargers at http://www.classic-enlargers.com/. There is a forum on that site where someone else has likely already asked your Omega question, and Harry has answered it. Or if not, you can ask Harry yourself. You can also buy Omega parts and manuals from him as well. I recently bought his alignment tool and instructions and found him very easy and fast to deal with.