I have been having trouble with some countryman headsets. I have to change the wires that comes from the pack to the headset about 2-3 times a year. Is anyone else using this mic and having a similiar problem? I believe that I just have a bad lot. I am using Shure ULX P 's and so far the packs are great. I mostly use the mics for musical productions which happen twice a year. The rest of the year the mics are stored in a temparture controlled room.