My hats off to you people who enjoy tinkering with these old machines. I am ready to pull my hair out on my 66. Hubby and I can not get the tension right. The more we fool with it the bigger the birds nest on the bottom gets. We are ready to throw in the towel and take it in to be serviced. We worked on the White today also and we could not get it to pick up the bobbin thread. I walked away from it and hubby continued working with it. He found out that you turn the balance toward the back instead of front like the Singers. It took a while to get the bobbin case threaded. I need to take some classes for dummies. :-( Kathie