I have a quilt on the frame that is a customer quilt. She brought her own thread for me to use. It is king tut and she wanted it on the top and bottom. I stitched two rows, and although the tension looked ok while I was quilting, it is horrible after I rolled the quilt. Railroad tracks, flatlining, stair step stitches,most on the bottom but some on top too. And, it is a very dense pattern, backing is the white on white fabric (looks like thick white painted on flowers), batting is cotton, and batik on top. 2 hours of quilting and I'm on day 3 going into day 4 for frogging. Bobbin tension is ar