One of my CD mags got stuck in my changer today. When I removed the unit from the car to free the stuck magazine, I heard something rattling around inside. Further disassembly revealed a single ball bearing loose inside the case. While putting the covers back on, another ball bearing fell out. While I am no mechanical engineer, I know that this is not a good thing. Hence my question, does anybody have a 6 disc cd changer that is compatible with a 95' 740i with DSP. If not, how much can I expect to pay at the stealer for a new unit. (I cringe at the thought!)