I had the audacity to take a 1956 Singer 301 to a FMQ class at the LQS that sold Janomes. The instructor was quite rude about my machine. Well, guess which machine did not jam, sewed exactly as intended, needed no instructor time, etc. The shop owners were not in attendance. I know they would have been unhappy with the way AnnieRose and I were treated because they were both vintage machine enthusiasts as well as being nice people. In fact, I gave her a pre 1900 Ruby that I didn't want to clean up.
My budget doesn't allow for classes in anything that I can learn on my own. Youtube and QB teach what I need to know. Coming from an apparel background, I did appreciate the help with FMQ, though one evening was enough. I think of that instructor when I make loops, which I like. She was adamant that you never cross a stitching line. Only stippling is FMQ.