I screwed up my order as to what I wanted done. Julian contacted me and took care of everything. The machining was done well and the accuracy is better than I could have asked for. I highly recommend TK to anyone needing work done.
Using these with the new 642 Pro Series PC model that comes cut for moon clips in .38 and Underwood carry ammo, since they have nickel-plated Starline brass. Excellent fit, and they hold open much firmer than the ones it came with, don't have to jiggle them in.