I had the same issues with my Chinese rearsets.
After getting some help from a few forum members i was advised to order the following parts from Sato.
2x reverse jam nut m6
1x reverse stud bolt M6.
I also ordered a new shoft rod from sato just to be sure.
2013 ZX6R 636 ABS, Shorty levers, Puig windscreen, Racefit Growler slip-on, Michelin Pilot Power 3's, Targa fender eliminator, Integrated tail, Yoshi frame sliders and spools, 5000k 35w HID's, Black solo cowl, Evotech blanking plate, Techspec Snakeskin tank grips, BMC Air filter