I have a Kenwood DNX 7100 from back in 2007. I recently got a 6th gen ipod and have noticed that some song on the ipod freeze the H/U's ability to control the ipod. It still plays, you can control volume, however you cant fast forward or rewind songs. I've been told that my H/U is older and will not support the new ipod. Is there ANYTHING that can be done to resolve this issue short of buying a new H/U?