newbie stampedes in where the wise fear to tread - but hoping for more ideas in this forum - here are my tips:
1. my 3.5 year old's hands were simply not big or strong enough to pull the brakes. 2 things changed this:
i) i removed the spring at the bottom of the back brake
ii) i adjusted the the little alan screws in each lever to bring the levers well within his reach.
now he can use both brakes with relative ease, even if he won't be pulling stoppies any time soon.
2. i accidentally knocked the cover off the little rheostat, next to the key slot. This allows me to dial in different speeds without using a screw driver, by simply turning the dial with my finger. I know the manual boasts that the awkwardness of accessing the screw of the rheostat is a safety feature but i found it a pain in the b^m.
what a great little bike. i ride a ktm 950 daily and a frightening mx bike now and then - i think i'll need to get a trials bike to cash in on the fun my kid's having!