Yes, I know these machines are very old but there are quite a few still going strong. The most common problem with them is broken teeth on the timer knob components. On this model there were two different lengths for the middle part of the knob assembly. The short version is 50099627007 but does anyone know the part number for the longer version? Most of the ones I see have the longer type but I have to replace them with the shorter one, which is not so easy to operate, especially by customers with arthritic hands.