One other thing to check for if you take it apart. If Tram is like Diamond, it uses capacitors for RF coupling/matching along the length of the antenna. These are power limited. Two transmitters TXing at the same time can make them go and they also can pop easily if there is a surge like a nearby lightning strike. Losing these caps seems to effect the UHF far more than the VHF. Rotsa ruck.
Dan N8DJP