Damn, but I REALLY admire the experienced watchmakers out there right now - I've been at this for a couple of hours! The assembly of my 7S26 appeared to be going really well. I got the barrel, reduction wheels, etc., all the way to being ready to turn the movement over and slip on the canon pinion with everything apparently working well and freely. Then I decided to check over everything one more time... It turns out that while screwing down the yoke spring, I didn't notice that the yoke had jumped up over it's corner alignment pin. The yoke tail was put back in place and it stayed at the time, but now it is sticking out making the problem obvious :(. Tomorrow, I disassemble the movement back to that point to rectify the problem. And so another lesson is learned :). I do hope I haven't messed up the spring and that it settles correctly. My mistake appears to have been checking everything from a top down view - and not checking it from the side where the problem would have been obvious. The devil is in the details... There's a lot of details in two trays... I have to say something else - rodico, pith and pegwood. Well worth getting at the very start. Digging stuff out of a tray and getting it to the work area is just begging for trouble with tweezers only - at least at my level of experience! Rodico is a real saver there. Unable to capture a live shark, here's my DIY "pith holder" :P. An unused mouse charger stand that has found new purpose.