Can someone guide me how to set the thrust angle and wing incidence for this type of rc airplane.On test flight i encountered some problems. The plane lifted fine after the takeoff roll as soon as it was some ten feet in the air i eased back on upelevator and it nosed down immediately , i managed to recover it though.At full throttle it tends to nose down and at half throttle it flies like its a bit tail heavy the tail wings are a bit lower than the horizontal line .My motor shaft is pointing upwards (looking from behind the aircraft) the wings and tail are almost at level .If i shim the leading edge of the wing a few mm and add some weight upfront will it do the trick.