Carb/Throttle

[barnold]

My son complained about the thumb throttle being hard to use, so i switched to a twist. After a full weekend of riding, he was still complaining about the amount of force needed to twist the throttle, he rode many other thumb and twist machines during the weekend and did not complain about the force on them. is there anything I can do to make it easier, maybe a new/ different style carb. Falcon 150 GY6 style motor