I have a Model 42 that I was thinking of getting some work done to. Is it worth it to get it re blued or should I leave the patina on it and keep passing it down to the kids? We still use it bird and rabbit hunting and it shoots good but the plate on the bottom that holds the shells in is weak and sometimes doesn't come down far/fast enough to keep the shells in the tube. I end up pulling it down with my finger. Now this doesn't happen all the time just every now and then. Anyone around do good work on these?