I found out the hard way to use only what is made for the machine, bobbins, replacement parts, feet, etc. I ruined a Bro 1500 using prewound bobbins and have never used another prewound bobbin since. It would cost so much to fix it that I replaced the 1500 with a Bro 4000D which I did not purchase from the dealer wanting to fix my machine. Off the rack bobbins, feet or other parts are not the same quality as what is made for the machine in question. By the way I do have a Janome 2007 and I love it for easy use, cost, portability, quality sewing, nice dealer. Also I make sure the bobbin thread I use is for the machine I am embroidering on.