Hi all. I pretty much gave up on this project. Anyway, I thought I would add a bit as I try to catch up. I have tried so many different options that it's tough to follow. At the end, I eliminated the factory plugs just to get some of the confusion out of it. I was just working from the 4 post on the terminal block. added some fuses and a single plug. Which still didn't work. The unit is not neutral bonded in the head, it gets the neutral bond after the terminal block. That said, I believe the AVR needs to see the bond. As soon as I separate the neutrals the voltage is gone. I'm thinking a different AVR would be needed and unless one can be found real cheap, it's probably not worth it.
I replaced the stock fuses with true 20 amp fuses and genny does what I need it too. Ran it several weekends now and have had no issues. Load still draws form one side of windings, but hasn't caused any problems yet.
I would still be interested in a conversion if anyone can come up with one..
hope that helps a bit..