Hello, I'm very new here and am wanting to do some work on my "little guy", which is a Pietta Remington 1863 pocket that the cylinder won't come out right or go back in. It seems that something internal needs to done, and having done some gunsmith studying, want to do it my self if at all possible. Are there any "assembly/disassembly DVD's or even online sites to show me how to take it apart ?