I was winding monofilament thread on my bobbin and now I have a problem. I think some of the thread got stuck inside my bobbin winding spindle/shaft. Is that possible?? It turns really hard and I can't get it freed up. I have tried oiling with sewing machine oil, Tri-Flow, and WD-40. Even letting it sit overnight (many nights) so the oil would soak in. It moves a little easier, but is too stuck to wind a bobbin. I didn't have a problem until I used the monofilament thread. Can the spindle be taken out and cleaned?