Gah! I'm addicted. This weekend I got up the nerve to start cleaning up my 15-91. I started with the outside, and have slowly been venturing in. I cleaned out the feed dogs, then the bobbin case, then checked the brushes, and have now successfully taken apart and fixed the tension assembly. It wouldn't stop before, and now it does! And will do a full turn from 0 back to 0. It started at 4 before. I know it's not much, but I'm quite proud of myself. And addicted. Next up is rewiring once I get the parts. I can't wait to start quilting on it.
Dh won't be impressed when I find the next machine to start working on...