well me and a buddy was doing tons of tunning with the timming today, and when we wen tot drive it back to his house we realized that it was shifting into 3rd just fine then, ut when we got to his house we did some tunning with the carb and i think it might have messed it up again, and i can not seem to get the timming right, it seems no matter what i do i can't get it to not deisel when i turn it off.