There is a few blog post on the web on how to fix and adjust the Singer bakelite pedal. When one of these pedals get more than slightly warm something is out of adjustment. I can't search right now, but Archaic Arcane has at least two blog post on it. Many of the old pedal has similar adjustment options. Another thing that can be done is taking out the carbon disks, and very carefully clean each of, or replace them if you can find new. It's a dusty job, but within doable. A food peldal will get warm, that's how they work, but very hot then something is wrong. Any basic replacment pedal should work with your machine, it only needs to be rewired onto the existing cord and plug set.