Hiya Sam, I had one of these, I am sure the FM pot is on the 'local'
board, which is the one with the patch/ptt/CAT sockets on. VR02 I am
sure, and it feeds the fm af amp transistor, q2008. As for the power
control, they are very 'jumpy', all on or off, and very narrow over the
operating range, sure yours is just as they are. I also still have the
mobile mount for it in the loft, I think!!!!!!!!
Cheers, Fred G4ZWI