hello everyone have been doing some reading and we have a pocket bike a friend gave me for my son. it ran when we got it and after my son rode it for about 30 mins it died and wouldn't start back . we bought a stihl carb that matched the one on it. now it runs and starts great but after about 20mins or 30 at max it starts dieing it starts back up pretty easy but everytime he hits the gas it bogs down.. any help would be great and ill get some pics up real soon but if anyone knows where i need to start would be great.. thanks