I adjusted the bobbin tension. It's better, but needs more work to get it just right.
No, Janey, I didn't change the bobbin. I'm quilting an I spy quilt on my DSM with a walking foot. I'm using black poly in the bobbin and switching the top thread with each block. I suppose that's one of the problems. I'm just using whatever thread color best matches the top. The threads are just whatever I have. Some are poly, some are cotton and most are pretty old.
The bobbin tension has needed adjusting for a while, but I'm reluctant to change the bobbin tension on anything. I'll just check the tension on my dummy with each change of thread.
Thanks for the help.
bkay