Lots of good thoughts here. Don't forget to also double check the motors are plugged in to the right position. I am sure if you go back through it you will find something that was missed. I have done it before. As you have heard already... be carefull!
Red is the front.. what do you mean motors plugged in the right way, are you referring to the 3 wires from motor to esc's?
Harry
I am having the same issue.. DJI F450 with a Naza Lite.. Props are on the right way, all motors are spinning the right way and the Naza Lite is facing forward..
I just built a F550 with all the works and didn't have one issue.. lol