The other is "if it ain't broke, don't try and fix it"
Ain't that the truth. I'm in the process of installing sights on a friend's TC muzzle loader and the cleanout screw is seized and the head buggered. In talking with him he is having no problems with it that way but it is
SO tempting to fool with it.
AKArcher, thinking through each step before starting, and giving it a rethink when it doesn't go exactly as planned, is absolutely necessary or you
will be learning from mistakes. (Guess how I know
)
We had a retired machinist here that took up gunsmithing and was generous with his time and knowledge, and a helluva nice guy. I'd read the books but watching him actually do it made it all clear plus learning a trick or two. He's sadly missed. If you find a guy like this, don't pass up the opportunity.