Large HexaCopter PID tips

Hi all.
i built a large HexaCopter:
2x 6S lipo batteries 36 Ah capacity
carbon props 29"
pixhawk 1
40 A esc’s
running copter 3.5.7

after some flight test i reviewed the ATT tab and my DesPitch vs actual Pitch DesRoll vs ActualRoll are complitly off. i tried tuning the PID but with no luck.

any tips?

thanks in advanced

First Update to Arducopter current Stable and update Mission Planner. Reset to default and start over from here: