So glad that you figured it out! I love the color of your machine. I have a Japanese clone that looks sort of like yours but mine is turquoise blue. Did you post a pic of your machine in the thread for "model 15 clones" ? I think the name of the thread is something like..."Will the real model 15 please stand up"

The Morse was my first sewing machine, back in the late 50's. Sewed many a dress while in college. Loved it.
Except for the weight, of course!

I'm impressed, yah for you

Good for you. These machines are great for staying out of the repair shops.