Originally Posted by AbbyQuilts
[ its not the top thread that breaks and get stuck its the bobbin. even when I am done I can not pull the tread.
I would still try a different thread (when you get it back out). It was my bobbin thread that was causing skipped stitches on my treadle. And, I had the tension a bit too tight so sometimes it would not let the thread pull out and would break. Again, I am far from expert, just sharing my experince.
Happy sewing on the 66.