Graphs looking better.
Sensible plate voltage.
Works with negative voltage source. Cathode capacitor oscillates.
Graphs looking good.
All working except Ik looks like a voltage.
Plate current now oscillating but voltage erratic.
Vk looks good but Ck and Rk are too large.
Fixed Vg but Ck = Rk = Ik are too large.
Almost there, all voltages remain bounded without restriction.
Outputs correctly for ideal amplifier with no power limit.