my warrior starts fine when cold but once it gets hot i have to back the idle screw off and slowly turn it back it while at same time running starter and it will slowly pick up and run whats wrong? i just put new connecting rod had it bored 0.40 over replaced head with rebuilt one put new carb boot new carb and new spark plug and cleaned my k&n air filter problem didnt start till i replaces everything...any help would be awesome and thanx in advance