[Raleigh]

Normally you think of a candohm as being 3 resistors in series. You measure resistance between each lug and the lug next to it. You might have to check out the wiring to see which pair of lugs represents which resistor value on your schematic. Often for bias resistors, one end lug is wired to ground (and the minus side of the output filter cap) and the other end lug goes to the center tap of the power transformer, but I'm not looking at your schematic. Yours might be different.