Thanks everyone, for your suggestions. I checked the things you mentioned. The accufeed was engaged and the screw was tight. If I hold the foot by the "ankle" the foot itself will wobble side to side where the hinges are. Hope that makes sense. Maybe that's normal. I know it has to move up & down to go over seams & such, but side to side? Maybe I'll try it again tomorrow. If y'all like it so much, maybe I'm the problem. I do think the straight stitch plate that came with it is good.