OEM QS was an easy install, I did make my own jumper to initialize it though.
I have the same issue where it won't upshift at full throttle. A friend of mine has a stock base model 1000rr with the shifter reversed and has the same issue.
I just bought the OEM QS for my 17 base model. I thought it was as simple as plug it in and turning it on through the dash?
I'm slow and ride at the back.