I've had a Shopsmith since '82, although I don't have the scroll saw. (I've replaced the belts once and the switch twice in all those years.) Head over to the Shopsmith forum, there are lots of knowledgeable folks there and I know some of them have the scroll saw. Here's a link:
http://www.shopsmith.com/ss_forum/index.php?sid=3aa8049804a76c7a5b66148eb3e06caf
And you can call customer service, they are still made and serviced - customer service is pretty good most days. I don't have the number at hand, but I'd be glad to look it up for you.