Hello all. I recently had to replace the needle bar on my Pfaff 335. In order to do that I had to remove the hook assembly and needle bar and put them back on. That necessitated a retiming of the machine. I have a pfaff service manual but it's useless to me because it mentions things like the lower needle bar bearing and I have no idea what those parts are. Futzing my way through things I think I have it almost there. The stitching look ok but the knot is but super consistent. The upper thread t