I am having trouble with my thread breaking. I can do about 2 or 3 rows and then the thread breaks and I get those birds nest on the bottom(bad). Then I adjust the tension on the top and try it and the bobbin and try it(you know how it goes) and then I get it perfect and start again and 2 or 3 rows later, same thing. I have changed the needle, made sure the quilt is not too tight, and made sure it is the right height on the take up bar. I am using King Tut top and bottom with warm and natural batting. I have truly ruined this scrap quilt(my mom made..ugh). Can you tell me what to do to fix it? Another question is that I have the zipper leaders...can I take the quilt off and put it back on in the same exact place after I take out the birds nest? Getting very frustrated...I want my short arm back(not really). Thank you for any help out there.