Glad to hear this. I took a leap and used the mattress pad. I AM having a problem right now, though. When I stitch two pieces of fabric together as a test, my machine works fine. When I put the quilt top/backing/batting in, the bobbin thread heaps up on the underside and gets all jammed in the bobbin case. Looks horrific, lol. I'm very inexperienced, but it seems like the feed dogs are not moving. I compared the mattress pad to a piece of regular batting and the difference in thickness is minimal. What can I possibly do to remedy this?