I haven't posted in a long time. First things first---Charlee enjoy the GBaby now because they grow up way way to fast!!! I have been playing with my 15-91 again today trying to figure out why it hangs up on the bobbin case. I so want to FMQ with it because it has a beautiful stitch both front and back. I've checked that I have it threaded right, the needle is the right one and it is in the right way plus threaded from right to left. Sometimes it will sew for just a few stitches before it hangs up and then sometimes it will go for a couple of feet or more. Maybe this is the reason the guy sold it to me for $20.00!!
Am posting a picture of the bobbin with yarn (so maybe you can see it) laying on it and wrapped around the finger that sticks out. This is what it looks like after it locks up. If anyone can give me an idea of what to try next I would appreciate it. Thanks! I've also messed with the upper tension which seems to make no difference.