Anyone who is worth his salt knows a competent and knowledgable person (on RC stuff) need not necessarily be a good or great driver. Factory drivers merely give their input and feedbacks and then the designer will have to redesign and further improve the car.

Likewise, many professional sport coaches aint great players in their prime, not to mention some are not even professional players! Jose Mourinho comes to my mind

Anyway, agreed with most of the comments here bout the MTX-3, I think most racers here in the far east have had problems with the 2 speed system, some have used ceramic bearings but I believe using small rollers will be an easy and effective solution.

Cheers!