Hi, i need a picture of the inside of a duster amp if anyone has one. I have 2 maco 3oo mobile amps and 4 maco mini brutes one modified to use 6lq6 tubes but missinf the keying ciriut out of several. Have all new 2057 tubes and 8950 with new transisto0rs for all except the keying and antenna relay circuit can anyone please help.