I have 601 miles on the bike with no quick shifter issues. I did have one stall (bike failed to idle ) and a situation where the bike just decided to run roughly for no reason at all. For lack of a better term the bike "chugged" at highways speeds (70mph) while at a consistent throttle setting. Very weird, this happened one time and has not happened since.
I am waiting for all of the recalls and bulletins to stop before I take my bike to the shop. I am not a fan of recalls especially if I am not experiencing the problems that are being described on the forum sites.
i never experienced any problem with mine and i did the recalls when i did my 1st service, didn't noticed any difference except for the 2 cylinder shut down at traffic light thingy.....bike run like normal hence don't worry too much, take it as a little touch up for a beautiful product just to make it perfect!