Sorry to hear about your friend, that is shocking.
I think waht people are getting at is the strange way the schematic has been set out. It's unconventional, to say the least. Try looking at other schematics to get the idea of how to represent the circuit in a way people are used to seeing.
Don't forget, if you change from grid (a.k.a. fixed) bias to cathode bias, you will effectively lose a portion of your B+ (H.T.) voltage. I don't know what your cathode bias voltage would be but it will be built up across the cathode resistor, reducing your available plate-cathode voltage by the same amount. So, you may have to increae your B+ to compensate or you may lose power.
I think waht people are getting at is the strange way the schematic has been set out. It's unconventional, to say the least. Try looking at other schematics to get the idea of how to represent the circuit in a way people are used to seeing.
Don't forget, if you change from grid (a.k.a. fixed) bias to cathode bias, you will effectively lose a portion of your B+ (H.T.) voltage. I don't know what your cathode bias voltage would be but it will be built up across the cathode resistor, reducing your available plate-cathode voltage by the same amount. So, you may have to increae your B+ to compensate or you may lose power.
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