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I was at 195ma, tweeked it just a bit to get to 190ma (simpson 260 VOM), solid 21kv with no noticeable flux on the HV meter (simpson 248 hv probe).
I am going to try some tube swaps just to see the effect with the current setup.
I don't have my good VTVM handy to get a control grid voltage reading on the HO tube, but will use my DMM and see what I get. Then will replace the 82k with a 120k in that voltage divider on the osc plate just to see if that will effect the drive/bias at that control grid (and perhaps further reduce the current thru the HOT). As long as I get good regulated HV I will see how low I can go.
I suspect some of the variations we are seeing is maybe do to the calibration of the test equipment?
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