Nice track bro ❤️✌️.. I own R15 S. I also faced the same problem in my bike too. Over wind blast iruntha bike six gear shift panna odane lock agiruthu. Romba time agi than speed one to one increase aga start aguthu.. But after fourth service i can feel little different. it reach top end easily.I reached 149 kmph. So oru 3 months kalichi again track pottu video podunga bro.. its my request.