I will try the oiling of the bobbin and now that I think of it, it was when I changed thread I had to buy at Wal Mart because I ran out and the fabric shop is not nearby. Wouldn't Coats and Clark be the same no matter where I bought it? I wonder if they do different qualities depending on where it is sold and at what price point? Thanks for all the advice. I will try it all and see if I can figure out what is happening. I will also try to rethread the top thread and see if indeed there is something impeding it from feeding properly into the machine. Weird that this would happen half way through. Well not even small quilts are without their issues I guess. I sure am learning alot though as a semi-new quilter. Thanks everyone!