[JayJay]

This is my standard reply for this issue, sometimes it was the problem, sometimes not.

Look at the outside of your throttle bodies, on the right side there should be a black rubber cap on a brass tube, the left side will have a vacuum line on this port. the ports are approx. 3/4" long and 1/8" diameter, sorry I don't have a pic
If the dealer did the TB sync they will remove the hose and cap to hook up their sync equipment. Sometimes they forget to put either the hose or cap back on which will give you a vacuum leak causing poor idle, could be rough, higher then normal or both.
It will also be notced when accelerating or decelerating.
Look from the cylinder, front to back on the inside of the fairing along the TB.

I realize I'm late to the party, but this is what I was going to suggest. Easy "oops" to make, unfortunately not all that easy to check without pulling the tupperware unless you know what you're looking for.

JayJay