geting your head modded is like 60 bucks from ken you can make that in a day shovling snow...... if you get a 4 stroke your going to be throwing money at that but stuffs gana cost alot more and id like to add you shoudl learn to jet a carb its not that hard. why dont you just try playing with the air screw theres plenty of write ups about it look for one of phragles his are always the best. idc who jeted the carb people make mistakes like i said you need to learn someday. i learned from this site i think you could do the same.