I was getting ready to machine quilt a baby quilt, so I got out my practice sandwich. Big eyelashes on the back. So I tightened the top tension and it was getting better, but still not there. I cleaned out the bobbin race area and adjusted my bobbin tension a half screw lighter. Had to do it 3 times to get the thread coming through easier. Adjusted the top tension down a little to match, and now I'm breaking thread. It's WAY off. My bobbin case was marked, so I adjusted back to the original setting, but I'm still breaking thread. Help me before I have to take my baby to the doctor!