Hey everyone, I'm starting work on a 5F10 tweed Harvard build and my power transformer doesn't have the bias tap on it, so I'm going to have to get the voltage from pin 4 of my rectifier tube socket. I was hoping that someone here, who has some experience with this, might be able to recommend resistor and trim pot values that would work in this circuit. I feel like, if I follow the layout on this TDPRI page, all I'd have to do in my case is to raise the value of the 10k resistor in the bias circuit to something like 47k. Does this sound correct? What component values would you suggest? Since I'm using a Victoria Amps Co. Ivy League power transformer, my best-case scenario would be some clear pics of the amps guts, to mimic their wiring, but I can't seem to find any on the internet. Thanks in advance.