So I've got an interesting one that I've not seen before, so I thought I'd post about it.
I'm in the midst of restoring a rather, erm, let's say, well-used, Wilton C0. I've got it stripped down and cleaned and have ordered some new jaws from our very own Kevin Scott, which where my issues started. Not with the jaws, of course, which are simply works of metallic art, but in how said jaws lined up. Not only did the dynamic jaw hang just a bit lower than the static jaw, but in the last 1/2 rotation or so before the jaws met, the dynamic jaw would rotate slightly, and they would be off-enter.
So until I noticed the small off-center twist there at the end of the movement, I was concerned that I had a bent slide, but after noticing it, I began to think that maybe just the key in the slide was could be worn.
After taking some measurements, it turns out that yes, the key was quite worn, causing the slope/play in the jaw. The channel in the main-body is right at .502", while the channel in the slide was right at .5", the section of the key that protrudes is between .487-.488". I believed that I was going to need to machine a new key out of some square stock, but turns out you can actually purchase 1/2'' x 5/16" key stock, which are the cross-sectional dimensions of the key I needed.
Well it came in today and I thought I'd put up some photos of the trial fitting. The new key fits in the main body perfectly and I believe it will help with the issue quite well.
I'll post an update after I get it refitted and replaced.
