Anybody had the same experiences as me with trying to pair bluetooth BMW helmets with the K1600 audio system? I have a BMW System 6 helmet for me and a BMW System 5 for my partner, each with the BMW communicator fitted (last week!). I also have the Nav IV and an iPhone. Even though I very carefully followed the pairing instructions in the Pairing manual, I can not get the System 5 to pair with the audio system. The audio system recognises the helmet but I can't get the helmet to pair and get "unsuccessful" each time. The System 5 will pair with the System 6 but just not with the bike. I religiously switched off the Nav IV and the iPhone while attempting to pair the System 5 with the bike. Any words of advice?