Hey friends, I've enjoyed getting into the hobby of fixing up project EM machines. I have 4 so far, all are Williams machines. Not by choice, just happened that's the brand that I kept coming across. Two are from the 60s and two are from the 70s. I feel like I've learned the Williams components decently with help from other Pinsiders.

My question is how will my knowledge translate if I work on another brand of EM in the future? Are there huge differences between the manufacturers in the 60s and 70s? If I come across a Gottlieb or Bally EM from the same timeframe, will it all be pretty similar, or vastly different?

Thanks all, really appreciate your insight. Sounds like I should be able to muddle through and might surprise myself. I may get my hands on a Flip Flop soon. My local club just got one by donation and there doesn't seem to be anyone there that knows much about EMs. I'm going to volunteer some time to help out.