Thanks for the FET Brach, That cleared up volume levels fine. Now I seem to be missing any signal from the HFO side of things. In calibration mode LFO sounds fine when Harmonic mix fully counter-clockwise to about halfway. Full clockwise gets nothing except at max gain a faint high-pitched pulse squeal, back to halfway then the LFO seems to cut back in and functions work well. Tempo LED works fine either way. Nothing I can do trim-pot wise makes any difference whatsoever. Case on or off, no difference either.
Ideas please? Test-points I can work with?