Here's a real newbe/greenhorn question: I would like to remove the knurled cylinder thumb release lever on a 38 year old collector M19-2 so that I can better clean up and wax that part of the frame. What will happen if I remove the screw holding the cylinder thumb release? Will I be able to reassemble the part easily once I remove it? I have no experience with removing things from revolvers so I don't want to create a situation I can't recover from. Thanks in advance for your help.