I have re-capped a DX-60 and replaced any bad resistors. When I do the initial test, the Tune level needs to be turned down to 1 (i.e., all the way to left) to get a maximum reading on the meter. It will go up to 2.5 easily when I adjust the Drive Level, but the Tune level control right has to stay at 1 for the meter to peak. Then, when I move the switch to Plate and turn the knob to AM, the meter pegs to the right and moving the Final Tuning knob will not dip the meter reading. Any suggestions? Thanks.