I thought I was going to pull my hair out because of that same thing. Then I went to the Houston Quilt Show and discovered the TOWA bobbin gauge. It has helped me eliminate almost all of my tension problems. It was pricey but well worth the money to me. And, now Superior Threads has introduced a top tension gauge for long arm machines. I am ordering one this week! I can't wait to get it and try it out! Tension problems make me nuts! Good luck!