Sometimes I would love to know the story!
Sometimes I just have to step back and wonder, "What is the story behind this?"
I enjoy the white 534 I picked up a while back so much that I had to pick up another. I got it set up and after a while working out the tensions, it ran like a champ, except for a random clatter up in the top part of the machine. I tore into it and got the whole bottom end cleaned and oiled, and looked around as well as I could in the top without really getting into major tear down mode, and couldn't see a thing. Then I noticed something loose up there when I rotated the machine. I finally ended up shaking it until a needle fell out. How in the world does someone get a needle up in the top of the machine? At least now it sounds so much better, and I can use it without worrying what was up there, and when it would migrate to a spot that would jam things up.
Jim