I fixed my dt125x a while ago and had a blast riding it for now around +-300km. But yesterday i came to this problem, drove 30 km's en went for a 15 min break suddenly after that it had problems with starting and bogs out if i give full throttle while idling and dies. Driving was still okay. Jetting should be on spot and a little on the richer side, jetted it for weeks till i got it right (240 main, 27.5 idle) float height properly set according the right manual (16mm if im right), Snorkel still installed and have only a romeu upper exhaust. The sparkplug(br9es, +-300km) still looks fine in my opinion and i also checked the reeds and also nothing to see. For the rest has it a new ignition coil(oem), new intake gaskets, cleaned and properly oiled air filter. Driving temperature is always very stable around +-71 degrees Celcius. Hope someone can help me