top speed

Hi everyone, I Have been pondering the idea of having my primary machined allowing the belt to ride higher in the sheeve to theoretically achieve a higher mph. Im at approx. 101-102 max in hard pack snow and ive seen 106 on the speedo on straight ice across a lake. My question is does the stock...

Can't seem to figure out why my 2016 RTX will only go 66mph at 12k rpm. Mods are a few from Schmidt Brothers as well as a 136" 1.5" free ride. I have Chris' stage 2 clutch kit. Stock gearing (18/41) with 9 tooth drivers. Tested by 2 different riders, talked to Chris multiple times. NEED HELP...