I took the RX300 into the dealer today (sad), they just called saying it's not the transmission, engine, drive train or exhaust. They really didn't have much to say, i mentioned i didn't replace the front engine strut or the transmission mount, so maybe it's that? Hopefully they'll try pulling it off then see if it goes away. One things for sure, they're going to charge me a lot of money, this I know. If this doesn't fix it, then i'm going to turn the idle up 125 rpm and sell that damn thing, back to Honda is it.
Dave