Candace

I know. That's what I'm saying. The knobs don't necessarily have to be removed as the liquid wrench would get into the crevice and release any stuck parts. I have learned to not touch any of the Pfaff knobs or handles as odds are they can and do break. When I turn any of them during use, I always turn the body of the knob and stay away from the handles as they typically show signs of cracking or are broken completely off on some machines.