Doug, I looked a some schematics online that say F3 power supply and they show a standard bipolar supply.Maybe i'm looking in the wrong area.Do you have a link where I may view what you are speaking about?
Papa used the same PCB board, as you can see on F3 PDF, but you have to modify connections this way:
F3 Builders Thread
OR
You can use single rails with 36VAC donut
F3 Builders Thread
OR
You can use single rails with 36VAC donut