I've only been doing these sewing machines for about 3 or 4 months, but I've gotten to the point where I just can't stand to let one slip buy that needs some TLC. I've brought a bunch of them back from the brink of being parts machines just with a few parts, cleaning and lubing. I have my favorites, but like you most of them just set little used.
If it weren't for the shipping part I'd put them up for sale and try to find them good homes.
Joe