Would be interested in your update.
I'm still having issues with the headphones. Even just sitting with the phone to my side, I will get a hiccup here and there. It's not often, it might be every few songs, but it does happen. However, I just got back from about 40 minutes in the car and not once did it hiccup. So, I don't know what the issue is.
If it was hardware, I would expect the issue with both my car and headphones. I know the headphones are working flawlessly with my Moto X though so I am at a loss.
Also, I've checked range and I'm able to walk 20 or so feet away with the phone in the living room and me in another room and it continues to play fine. So, again not quite sure what it can be.