I seem to be having an issue with my H3-3D gimbal. I purchased the H3-3D gimbal used from someone who said he's only used a few times and it works fine. Well I installed it on my P2 and all it does is point down. When I first turn the phantom on the camera faces correctly at 90 degree's then it points down and stays there. I can't seem to point it up or pan up and down for that matter. Playing with the lever on the controller doesn't do anything either. Latest firmware is installed. Any help??