I have this machine and trying to quilt a teeshirt quilt. I completed all but the last roll and ran out of bobbin thread. I changed the thread and switched to free hand quilting vs doing the panograph quilting. Now I get tangled thread and lots of eyelashes on the bottom. The top quilting is always fine. I have checked my threading of the machine, bobbin tension, cleaned and oiled the machine and changed the needle, no improvements. I have tried 4 x's to quilt this. I 'm wondering what settings you have your machine set. Stitch length, and are you on regulated setting. Do you quilt faster than when you follow a panograph pattern? Also does it matter if the teeshirt top is on the bottom or not? Any help would be appreciated. Thank you in advance.