Well, I got the new tire installed and had the dealer look at the grip. Aparently, this is the first Black ISO any of the technicians have seen! The problem I was having is related to the ISO grips themselves. According to them, this happens all the time and when an ISO grip doesn't go on with just a little effort they return it to Kuryakyn and open another one (must be nice). They've also seen the problem with the sticking throttle sleeve, due to the large ammount of rubber from the grip compressing it against the bar. Oh, and there's nothing they can do about it! Their recommendation was to buy some good lubricant and go to town or to try and widdle down the inside of the sleeve. Well, there you have it, from the professionals. They even removed the endcap to ensure the grip wasn't on too far.
They also lauged at the new glue that comes with the ISOs ("Black Widow" or something) because it bonds instantly if you stop or squeeze too hard on the rubber while installing the grips. They use rubber cement.
One last thing I noted, they don't remove the ribs closest to the switch housing (perpandicular to the bars) but use them as the "stop" for the new ISOs.
I hope this helps anyone that tries to install these in the future.
