Motor has trouble getting started sometimes
Sometimes when I try to sew it just goes mrrrrr and doesn’t move, until I turn the handwheel a little then it goes. I got a buttonholer today and it sewed the first one okay then was getting hung up again but kept doing it, not just once like usual. Then i put the regular foot back on and unthreaded it and ran a long strip of fabric through really fast and haven’t had the issue since that. A while ago I cleaned out what grease I could and refilled the tubes. Could it be an issue of old grease sticking things up?