Thanks very much for your advice....I haven't had a chance to break down the unit and check it out yet. I did receive an order from Mouser with new Rotary encoders for my two units, so I'll probably do this on a Saturday when I have a few hours to devote to it....

Thanks, Randy
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Happy owner of 2 Centrals, 2 Empegs Mk2a 160GB, 1 Empeg Mk2a 60 GB, a Rio Riot, 4 Rio Receivers, and two 1GB iPod Shuffles...