I would keep on taking the machine to the dealer and demanding that they get the bugs worked out. I have a 200 machine (I think the 730 replaced the 200 model) that I had trouble with the 1st year I bought it. It was at the dealers more than in my sewing room but once they figured out what was wrong with it I love it. I also have a 440 that has never given me a problem. Hope things get worked out-