Spyder5711,
Sorry for the late response about the 21" wheel. I did finally fit it on early December. I ended up taking it off because the wheel was not straight. The bike rode fine below 60 mi/hr but anything over that was very dangerous. I'm in the process of getting the wheel trued and then will need to modify the mounting of the front fender. I also need to raise the front because the 21" wheel was rubbing against my headlight cowl. Let me know if you need any other info about doing a 21" wheel. I can share what ever I've learned from my wheel.
Regards
Randy