Plate= 450 V
Screen= 350 V
Grid= -24 V
Cathode= 3 V

I'm not using my old faithful Eico VTVM I've used for many years because the 1 meg precision resistor in the probe has finally drifted to much. I'm using an old archer with different values for each scale. I have it straightened out now.

I also experimented with a resistor in the AC line. All I had on hand was a pair of 50 ohm, 10 watt, so I wired them together for 25 ohms. Here's what I got.

Plate= 420 V
Screen = 330 V
Grid = -22 V
Cathode = 2.6 V

Looks like I'm just not going to get enough negative bias.

I'm almost ready to rewire this back to origional and just buy a set of 7591's. Darn. I prefer EL34's, and dang if this thing doesn't sound sweet.

Dave