Hmm, looks to me as though the feed dogs are slightly different in height. The tension is still bad - I turned it to zero and still had quite a bit of tension on it. The metal bobbins definitely work better than the plastic. I'm going to take the tensioner apart a soon as I have a free hour or two. So many things to do! Why did I ever think retirement would be hours of free time and relaxation??!

I spent my weekend free motion quilting. Everything was going well and suddenly nothing was going well. The tension was off. I cleaned the machine, I rethreaded top and bottom, nothing seemed to help. I then had an aha moment -- changed the needle and all my problems disappeared. I thought of you and your issues.

Try a new needle. Perhaps that will help.

Aileen