I used a thread from Superior Thread that I have never used before and getting the tension set properly was an absolute nightmare! When I would get it where it needed to be and everything looked good I would start quilting and then it was off again. I almost gave up but finally it worked! Ripping stitches is no fun, not when sewing or quilting. I was taught to use 2 different colors so you know exactly where the problem is but sometimes that's impossible. Hope you post pictures of the top stitches.