I have acquired an AZDEN PCS-6000 Mobile Rig. Question: Does anyone who own/previously owned this radio happen to know how to do a Master Reset!?? For some reason when I key the mic, it switches from the frequency I am on to 144.900! Almost every time! I found a PDF manual for it and I can't seem to find the answer. I like the radio... I'm currently using it as a 2m home rig. Any help is very much appreciated.