Last night I was sewing just fine I went from fmq to reg sewing, stopped for a few minutes and then it just wouldn't go. My fabric kept getting caught. I took it apart about 5 times, cleaned it and put it back together. I kept playing with the feed dogs to make sure that I had it right. I thought that I would give it a rest and try tonight, no nothing works. I am soo aggrevated. Do any of you have any ideas what it could be?