no concerns, if your brushless won't work for you get an align 420LF. besides that most the problem with this heli is that it is underpowered. just be sure to do your own quaity check for walkera, they usually don't have time for that kinda thing []. besides that trim the HELI (not transmitter aka TX) and make sure all trim tabs are in the neutral postion before you fly you shouldn't have to mess with them, besides that you'll want to make larger training gear and just go out and bounce around leaning the controls, never getting above a foot until you've got the hang of it. Until you've gotten tail/head/side in hovering down pat don't try much of anything else, but after tail in try "walking the heli" just hover it down the street with you following.