Suggestions please.
Ok, I’ve had another look and a ponder, the only place I can see where there may be a problem is the part under mainspring barrel, shown in photo #7 with the red arrow.
Usually this normally raised step provides clearance between the winding gear and the plate base.
Part io this has worn away, and although I smoothed it, I think this is where the intermittent problem lays?
I’m not sure how to approach this? My options are
1. Remove the remain material and make it flush with the plate.
2. Perform #1 and try to make a small washer/bushing out of brass or nylon?
I would like to avoid putting in a bushing that would entail reaming out the original hole.
If anyone has any other suggestions though, I’m all ears 