hi
can i have some help with my mc21? i discovered my mc21 lost power starting at 7500rpm and struggled to spln past 9000. it also topped out at 130 km on a long straight at the track. i recently dropped both exhaust pipes, cleaned the power valves, checked the power valve motor as well. they all seem to be working fine.

i removed the airbox n checked the carbs today but the bike still run like very weak.

any suggestions and ideas

thank you