sm0k1

hi guys! new TW200 owner here, i've just gotten the bike earlier this month. does anyone know the best place to get my TW200 fixed? when i hit 90km/h on the bike, it seems to be stuttering and i am unsure if its due to the engine not receiving enough petrol when on the higher RPMs, or the carb settings not being right. i have cleaned our the carb and am using stock TW200 air filters. i have gone to two different workshops to see if theyre able to solve the problem but to no avail. both shops think its due to the airbox but whatever they did, it didnt change a thing. so any advice would really

does anyone know if planet motor does TW200?