In the British Trade after hardening the gun was passed to a "Free'er" who did all the complicated stuff,making sure it was on face tight in the action and that the bites were correct. and made it work .The Free'er could make the difference between a good gun and a bad one.After this the barrels were blacked[blued]the furniture's blacked and the gun would be assembled and tested before delivery. I did this for 4 years for a well known Birmingham Gun Maker,some actions needed hardly any work at all but some seemed to have moved in three if not four dimensions.
You have my sympathies.
