I have a Snake Charmer series II (.410) I've had on my boat for years. Kids dug it out and we tried to fire it. Then I remembered it wouldn't fire. The problem appears to be in the hammer. I don't think it hits the pin. Anybody know of this problem and is there an easy fix? I'm no gunsmith. Or is the fix worth more than the gun? I think I paid $150 for it years ago, so no big deal, but if it was something simple and easy, I'd like it fixed. Suggestions?