Herm- I would assume at this point that things are OK. -106 volts will be sufficient to put the finals into deep cutoff, which is all you need to be able to do. In typical operation, I think the bias voltage runs around -65 volts for 100mA total PA plate current. Please revise the writeup to -100 volts for this measurement. I just measured -101 on my KWS-1. -Tony, K1KP