Ok I've read a lot of good reviews about he Car Kit so I bought it. It works great for music, GPS speed is much better especially initial acquisition. However, when using it for phone calls it sucks. The other person can hear me just fine so the mic is good, however they are constantly breaking up on me like ever 3-4 seconds there is a 1-2 sec cut out. But the speaker works fine if i play music or other things over it. What could be causing this ? I tried it in 2 different cars to be sure it wasnt the environment. Help !