I have an older contemporary flintlock that iehter over time or through less than perfect inletting skills has a few gaps arround certain areas like the comb portion of the an extended butt plate. Is their a cosmetic solution that can be used in small areas ? I was thinking if their was some type of collored wax to use if made , rather than a filler that would harden and have to be stained. Do such things exist or should I just leave it alone ? I wanted to to it to keep moisture out of those areas plus to make it look a little better.