Ok 1st post....so i bought a 2016 wk 125 sport yesterday... tidy bike but is abit noisy with vibration. Riding home i noticed it said i was doing 70 when i was clearly doing around 45-50... haha. Anyone had this issue with a bike before? Cant be speedo cable... dont know if i should change the speedo drive or the clocks. What if i get another wrong speedo? Please help