So I am working on a Waltham pocket watch movement and when I move the pallet fork away from one backing pin it snaps back to that same pin. I am assuming that this is a lock problem on the opposite pallet jewel, but just wanted to confirm that my thinking is correct and that there isn't something else that I might be missing. Thanks
The WOSTEP escapement handout is a great piece of information. Thanks, @JohnR725 for posting it! I use that handout for my students. Imperative to know the theory before attempting to set jewels for the escape wheel and pallet. Another great book regarding the escapement is 'The Watch Escapement' by Henry B Fried. It pretty much covers everything you need to know about the Swiss lever escapement