Hello - I have an 1862 Colt Pocket Navy 5 shot revolver that I'm attempting to get into working order. Serial number, 306769, manufactured in 1868. First, I have disassembled everything except for separating the barrel from the cylinder. What's the best way to separate these without risking damage? The whole gun is pretty crudded up and maybe even rusted together. The barrel is held onto the central extension from the cylinder by the wedge you can see just under the screw at the center. I can get the wedge out, but the barrel doesn't budge. Second question: The hand and spring assembly is separated from the hammer. I assume that it screws to the hammer through the hole at the bottom right in this picture: Here's a picture of the hand and spring: Is that big ugly corroded pit at the base of it the remains of a screw in what used to be a hole? If so I assume that I will need to replace this part. I'm a beginner at this, so if you respond don't be afraid to explain things in the most basic terms. Thanks!