anybody managed to pair this combo successfully, i have audio mp3 clear as a bell with no issues but turn directions and voice prompts are barely audible, sony unit is paired as audio, it drops and reconnects fine, volume is flat out on master and navigation, and the sony is paired as bluetooth headset and not headphone, also the 660 is the non bmw unit but it is sitting in the new bmw r1200gslc cradle mount, any help or suggestions greatly appreciated.