Just took the bike for a quick 20 minute ride. Much improved. Idle is still a bit off, fluctuating between about 600 revs up go about 950.
Ome time, I came to a stop quickly and the bike dropped to about 500 and died, but started right back up.
Taking the kids out now, as it's too hot to sit around much more.
I think I'm still looking at a possible air leak, around the plenum. I don't think those boots are seating fully.
I turned the balance screws about a half turn, and that helped, but I need to do more and it's a lot of work with the stock air box to remove it all, turn the screw, then reinstall it all to test.