thanks Lbug - I was using the dual feed foot then changed to foot A just in case that was the problem. Had foot pressure on 3 then changed it to 2. I'll go to dual feed with 3 again and see if it keeps good. I do think it's drag of the quilt. It has flannel backing and just seems heavy to me - but ... biggest one I've ever done.
Thanks everyone - onward and upward!