I always leave everything on, I like to have all of the rotating mass balanced. Oh and if you talk to someone that does not seem to be the master mechanic, quiz them on the dot on the side of the tire (That is where the valve stem should be lined up with the dot) at least it happens to me every now and then here in the sticks!
Two weeks ago I took a front tire off the 1200s to the dealer to have it balanced ( they have a Snapon computer balancer) and the guy asked which way does it turn.
I said the little arrow on the side might help!
The service manager was standing there and he made sure it was right!
Brent