I went with what I thought was the best chance and went with the labeling on the transformer. From the link above, although they were talking about output trannies, Doc B says go with the markings of the transformer. After all, the tranny mfg could wire the taps any way they want. Sorry I missed the call back on Friday PM as Bottlehead tried to contact me. If I have it wrong it is just a matter of resoldering a wire.