wont idle without dying adjusted the idle screw and it did nothing my son rode it for a few days and it was sputtering here and there and finally died havent been able to get it started since. Checked th spark plug it was pretty nasty bought a new plug and it still wont start. Ive only had it about a month, the first two weeks it was in the shop it had got stuck inbetween gears. So they decided to give me a new motor. Had it a week after that and now this problem. any help Please