Hey Jim,
Thanks for your response. Do you have to remove the hook assembly to look at it and sand? When I first turn the machine on it seems to run longer without shredding the top thread, once it starts it's like every ten to fifteen minutes. The thread came off the hook in the back and the thread broke almost immediately, I could tell the thread broke not shredded even though it took me a good twenty minutes to figure it out. I have finished two quilts on this machine. When it works it has a pretty stitch, but it's a struggle with this issue.
Loretta