Judith, I have an 830 and it works wonderfully. i see you live in Lynchburg. If you could maybe make it to Rockville, Maryland, G Street Fabrics has the most wonderful tech guy there. Lew is simply a magician. I know of several 830s that were having problems that he set right. I think the very earliest ones had serious problems that they corrected by the time I bought my 830 LE. It has to do with the bobbin case area I think. I'd give G Street Bernina department a call and ask to talk with Lew to see what could be done for you. I know that's a hike, but may be worth it.