I love reading about you guys, and your love of the old machines.. Had a rough day, but you guys are way too funny.. I am terrified to take apart my machines.. It's a real fear.. I have a Singer 99 that really should be rewired.. Why the fear? I wanted to change the bobbin winder assembly with another that I bought on Ebay.. The tiny pin on mine was broken off before I got it.. The one I got on Ebay is a krinkle finish, and mine isn't.. I took mine apart, and of course the spring sprang.. I paniced, and decided not to mess with the other.. So.. I have a mismatched assmebly, and it just gives it character.. I think I will still change the wires on the 99.. She is very pretty, and capable..