[Collins] 32S-1 Oddity: advice please?

[wb6orz]

   Interestingly, this one has too HIGH grid drive. In Tune, on all bands, and with Mic Gain only as high as 9 o'clock, the grid drive pegs the meter, and while stable there, it is quite touchy/difficult to bring down, w/o turning the Mic Gain almost back to nothing. Doesn't appear to be oscillating because the alignment of the RF section went fine, with caps that nulled properly. Before I go any further than Tune, the concern is the too high grid drive.
    Experiences? Ideas?
    Thanks in advance.
    (((((73)))))
    Les
    ---===WB6ORZ===---