90v neon bulb vs resistor and 1N4007 (to protect cathode follower tube)

[SoulFetish]

Beautiful work SoulFetish!
That green screen resistor doesn't seem to be well soldered though (in the photo at least)

A question: why would EL84 grids go to -150 V if not protected by neon bulbs?

i know, i’ve resoldered those.

The EL84s are DC coupled to drivers from a separate supply.