DJI F450 Quadcopter 3D tricks and stunts, no crashes! Flown with Dragonlink V2

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second flight on the F450 quad, tried someone elses tuning for the autolevel, but it doesn't work that well, whole flight done in manual.
At the very end I am having some issues, at WOT it will pitch back and left pretty bad.
KK2 board
3s 2200mah lipo
20amp SK escs
Dragonlink V2
ipower 2212q 1000kv motors
hobbyking props
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