I have had the same problem with my Janome 9800. I paid about $100 for a new foot. The new foot is just over a year old and has done it a couple of times only for a few seconds. Called the place that repaired it. I was told I was SOL, 60 day warranty. So I have had 2 Janome feet go bad. The new one has only done it a few times so far. I am pretty pissed off.