Dumb, dumb,dumb, dumb, dumb!
I don't know if anyone else has done this or not, but here's what can happen when you don't pay attention. I was doing some applique with my embroidery unit, when it locked up and said to check hook system. So I took out the bobbin, removed the throat plate and cleaned out anything I could find. The wheel would barely turn when I tried to turn it. I called the shop to see if there was anything else I could look for. There wasn't, so we concluded I should take it in. When I went to remove the thread holder, I discovered there was thread wrapped around the wheel. So I was thinking that was probably the problem. They just called to tell me I can pick it up and, sure enough, that's it. She said I won't believe how much thread is wrapped around the motor shaft. Such aggravation! Of course, it happened when I'm trying to get some mug rugs done for my sisters-in-law's visit in just over a week. I won't have to learn that lesson again!