My machine is a singer Scholastic. It's been a great machine for 15 years. I'm in the market for a new one.
Tonight while I was quilting, and getting some puckering, I got so fed up with the walking foot that I took it off and used a regular foot. It was worlds better without the walking foot! It's a generic walking foot, and I've wondered if that might be part of the puckering problem.
My machine does have a presser foot dial, I loosened it some bit don't want to mess with it too much. I'm not sure it made much difference.
I'm definitely taking note of all the suggestions. Thank you.