Check the bearing on your idle wheel. We were having a problem with
this on one of the big saws at work, and about a week later the whole
bearing ripped itself to shreds. Made a lot of noise, but it didn't
damage anything- but with a 14" shop saw, that may be a different
story. It's definately worth checking out, anyhow.
Aut inveniam viam aut faciam

will do.

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Knight-Toolworks & Custom Planes
Custom made wooden planes at reasonable prices
See http://www.knight-toolworks.com For prices and ordering instructions.