Thanks for the links, I just inherited my old machine from high school days, mid 50's, it's a Japan made 15-91 clone and still stitches beautifully. But I would like to do some cleaning myself.
After working two days to keep it from shredding and breaking thread, adjusting tensions, and anything else I could think of...I finally switched to a thread holder and now it sews fine. Guess they dont wind the thread on spools like they used too.
Viv