Ah, that's right. I remember them as reconditioning SS pinballs (and other games), but just moving along the EM's.
Not sure why that is exactly, but maybe it's because EM's can kind of get worse on their own if not played regularly. What with metal contacts oxidizing over time.
You can interact with the ChatGPT Bot in any Chat Room and there is a dedicated room. The command is /ai followed by a space and then your ? or inquiry.
ie: /ai What is a EM Pinball Machine?