Also, you might want to look at the upper thread path. Are you going thru all 3 of the holes in the thread guide? This puts a lot of tension on the thread. Try using only one or two. I'm assuming you have also turned the tension knob down. What weight thread are you using? Is the needle in the right way?
Try just sewing a single layer of fabric.
Last edited by PaperPrincess; 01-09-2015 at 01:34 PM.