This thread went on and I missed it. Apologies and thanks for the ideas. singhg5, thanks so much for those manual pages! I can do this. Maybe. But I really don't have a choice.
I called the local Royal Enfield "dealer" here and they estimated $425 to do this, parts and labor! I'd think about another shop but without Enfield experience, I'd rather not pay someone to do what I will have to do which is, figure it out.
I asked about tires too, since it'd be in the shop already. $90 dollars PER TIRE. $90 to change one tire!?!
Theoretically, it could be worth it to pay. The time it will take me + the tools I'll need to buy might end up being a PITA, as Bare said, but I feel like those prices are a little ridiculous. Maybe I'm out of touch.