Is your dealer close by? If so, take your machine in and have them help set the correct tension. If not, rethread the machine carefully, use the same thread in the top as the bobbin. Make sure you have threaded the bobbin correctly. Next, use your manual and set the machine for regular stitching. If you can get it back to regular stitching mode with the correct tension it will make things easier. In your manual, look up Free Motion Quilting. Read what it says to do. It might be that you need the blue bobbin that Janome makes for FMQ. There is also a Yahoo Jonome Board, you might find help there. There have been other posts on this board for your very same problem. Do a search for it. Hope this will help some. I'll try and find more info for you.