I have a South Bend 10k I'm replacing all the wicks on. I had to remove the headstock to get at the screws that hold the gearbox on. With the gearbox off I was wiping off the bottom of the bed where the gearbox bolts to and a shim fell out. It's about the thickness of a beer can 1"x3/4" rectangular in shape. It also has a very thin strip of the original gray paint on it I guess where it was hanging out when they painted it.. I'm 95% sure this lathe has never been apart and was wondering if it's something you would normally find there?