Hello everyone

I recently entered the world of LF and picked up my second lens, a 135mm Schneider-Kreuznach Xenar, however the Synchro-Compur P shutter it is mounted on doesn't function. I've tried breaking it down and rebuilding it, following the steps in this video series: https://youtube.com/playlist?list=PL...PJgfdWtpjr-IlD but I'm missing something. The cocking mechanism is jammed somewhere and I don't have the expertise to figure out exactly what's going on.

If anyone could share some insights (short of sending it off to be professionaly repaired) I would greatly appreciate it.