I have a 1993 model 150 that has a nagging problem with the ptt. It will go down any time but will not go up. I hear a relay or something clicking but no upward movement of the motor. Spent $250 last year at local service department who said he could not get the part new and installed an old one. Well, it is doing it again. I wiggled some wires and it started working again for a while and then when I pushed the rocker switch down and then right back up it would raise the engine. can anyone tell me what to check or what is happening and where the ptt is located? Thanks