I think the escapement is okay, except for the one second setting (which is very skippy, most likely needs cleaning). When I trip the shutter on 30 or below, it acts like it is at B, but then when I release the button, the speed escapement takes over, and the shutter closes when the time is up.
I think I encountered a film transport problem today. I was at the 22 exposure mark of a 36 shot roll of Ilford FP4 Plus 125, and my finger slipped off the winding lever. However, I was able to trip the shutter, and then continue taking exposures. But as I was winding for the 26th shot, I noticed the rewind knob was not turning. I checked the tension, and it seemed okay. I wound and shot two more times, and still no rewind knob rotation. My biggest fear at that point was that I had ripped the film somehow, because it didn't feel the same. So I started to rewind the film, and it seemed very normal, with tension all the way to the start end of the roll. There was no part of the film left on the spool, and no excessive wear on the spool, or support that I made.
Won't know until I get the film developed what happened, but I am going to do a test with one of my special rolls of film (stuff I find in used cameras, and mark as a test roll, then use it over and over to test the functionality of a camera). I'll load the camera, take the lens off, and mark each frame outline as I run the film through the camera. I should be able to see if there is slippage occuring right away