Re: thumb throttle vs twist
I understand your frustration. I have owned 6 sport bikes and was very used to a twist throttle. When I got my 400ex, I hated the thumb throttle, but like they said, you get used to it. As for youth ATVs not having a twsit throttle, or adult ATVs for that matter, there are good reasons as to why. Go to the ATVSOURCE forum, and do a search.
If you want to relieve some of the pressure, you can try a throttle extender, or like I did on my son's mini Kasea, remove the oil injection and switch to pre-mix. Right now you are working two throttle cables (springs). One in the carb, and the other the oil pump. By removing the oil injection, you will cut the tension in half. My son's mini 50's throttle was stiffer than my 400ex with the oil injection. He is 5-1/2 and can ride it all day now.