OK, it says with the throttle cut off in normal mode, all arms should be level. Should the bottom of the flat bottom main blades be level also? Also, one of my main blades can be rotated, flipping the blade grip control ball almost 180 degrees - is this just slop in the plastic parts? Or is this expected with a little force?

Also, is there a trim pot in the servos accessible by removing the servo arm (like in Futaba's servos)?