Agree but only partially, yes the action job involves polishing internal parts. It also means, in my feeble little mind, correcting timing, installing a bolt guide so you can correct the timing, thinning the inner bolt leg so it's less likely to break, reducing the height of the hammer cam if needed, installing an action stop so you can give it that nice hard yank on the hammer with out breaking things.The music wire springs may not be traditional but once they are installed the revolver has a completely different feel, I rarely reduce the mainspring tension because once the other parts are polished and the music wire springs installed there's no need to fool with it If it takes a lot of effort to cock the hammer, the scale comes out and I will check the draw weight and adjust things accordingly. The nice part about all of this is once it's done you have a machine that will run for a lifetime without problems.