I have a 201 and I find if I put the foot controller on the carpet it gets really hot!!! And if I sew slow I have to let it cool off for a while. I put a couple feet on the bottom of the controller, the old ones were gone, and I also put in on a hard board so it doesnt touch the carpet. I was also worried about the heat when I was not using it so I unplug the machine. Worried about elect. running through the cord when I am not around. It does have old wires. Good luck.