yes the hk is quirky..
if you accelarate too fast it will stutter and slam you on the pavement... you learn that one quickly... smooooothhhhhh accel and even then sometimes it just wants to see you bleed and it will do it anyways...
Yes it will go on at min power once in a while just for the fun of it... in my case it occurs when i flip it on using the switch as opposed to plugging and unplugging.. so leave it on.. and use your plugs as on/off switch... if it goes in slow-mo unplug wait a couple secs till te caps discharge and try again. Never gotten the slo-mo twice in a row in this manner.
Also none of the settings are any good so get the card and reprogram it...
On a happier note it is impossible to overheat and is super-splashproof
Have 3 right now.. however as they die... Im replacing them with the Vesc or the hobbywing.. much better accel, much better braking, and without the full speed hickup/face slam experience...