Thats great news, glad you have got it sorted and very useful information for all us AWD owners.
Its a shame M J Allen weren't more forthcoming, they must know the system inside out but for some reason, probably some tie up with Ford, they wont help directly with owners. The main Ford agents dont seeem to know much.
I guess you willjust have to be careful when you get on hard ground for transmission 'wind up'
I still always reverse a few yards with mine when on solid ground just to make sure AWD has disengaged but that might just be a throw back to having the old County Transit, we know how fragile they are, belt and braces and all that.
If you were able to put up some pictures of what you did and the location of the solenoids it would be greatly appreciated.
Good luck