got it pre order, delivered a few weeks ago, had issues flying with the battery in the rear compartment, im running a 15oz 5000mah.. would stop moving forward when in flight and jump quick back to the rear.. the naza was touching the front of the battery so couldnt move it back any further

, so had to move battery to the top for better CG,, didnt wanna move naza on top.... it flys good, alot slower than the F450 with 11's but nice for shooting video.. now i have a big empty compartment in the rear..
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