I've got an odd problem. I'm installing 2 x IBM 18Gb hard drives into my RioCar. With the drives in the shock cage but not screwed into the Empeg (just resting on the top of the player, everything works fine. As soon as I put the shock cage in place, I get "No hard drives found. Contact support"

Any ideas what could be causing this?
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Mk2a RioCar 120Gb - now sold to the owner of my old car
Rio Karma - now on ebay...