Ok, I'm obviously doing something wrong. Brand new bird, put together per the videos and manual. Calibrated compass, acquired 6+ gps, then tried to start the engines, all that happens is the green led flashes twice as fast. Tried switching to Atti mode, same thing only with yellow lights. Cycled power, recalibrated compass, no go. I've tried the engine start sequence from the videos (both contollers down and to center) and the one in the quick start (both low left, then low right then low out, then low in) when the controllers are in any of these special spots the green flashes rapidly for about 1 sec. Hints?