So, my brother picked up an O8S roller at $400 a few months back. After building it out with a Max6/1100 combo and Savox servo, seems like he can't get through a battery pack without one side falling apart or the steering locking up from the other side tightening up? What gives with the 8s pivot ball retainers? Do we really have to buy aftermarket parts just to use it? I see the 8s setup uses one piece pivot ball caps instead of the 2 piece that the 6s rigs use. What's up with that?