m a x i m u s

when my revs come down from about 2000, i hear this faint rattling sound, more like hard rubber marbles in a can than a heat shield, or pencils rattling around in a metal pencil box. Also sort of sounds a squeaky bed spring (it's hard to explain). it's most audible when i am driving up an incline and let off the gas so the revs can come back down, like when going up a parking garage ramp. in fact, this is how i noticed it in the first place. i am thinking this happens bc the revs come down much faster when i let off the throttle on an incline. plus, it doesnt make the rattle at all in neutral, only when in gear. not sure if it happens when rolling in neutral. the dealer claims they cannot hear it. anyone have any ideas before i take it back in?

thanks.

m a x i m u s

or maybe this is "normal" gearbox chatter? i have heard semi-noisy gearboxes on my racecars before, but those were dogring boxes ...