hi,
i'm a beginner.
Mikey's videos are definitely awesome, don't miss it.
i have two cx3 and an esky comanche and all i can fly are coaxials.
i'd recommend you not to fly in tight rooms and not too close to the floor.
these coaxials are very light and sensitive to air turbulence and ground effect .
i think it's easier to fly my cx3 when it's moving a little forward.
so, i like to have the aileron trim in a position so that the heli will naturally move forward.
this way you basically only have to focus on rudder and throttle, what makes a good difference for a beginner (like me).
regards.