Jimmy, the method you're describing sounds a lot like the process described in the Sept-Oct 2005 Double Gun Classics e-journal article on an Unplugged Leather Pad. The screws are coated with release agent and inserted into slightly oversized holes that are drilled into the butt and filled with Acra-glass. If you don't have the article and it sounds like what you're looking for, send me an e-mail.