I have a modded orignal phantom 2 vision with T motor 2214's which I use solely for long range flights. I recently installed 9450 composite hub props. I normally get 20 to 22 min of flight time , but I have been noticing a slight decrease of flight time since the switch. This is over 4 different limefuel 6000 mah batteries one of them brand new. I heard the composite hub has more give then the metal one does this translate into less flight time?