I read in your other post that you set your stance forward on the board?
So let me get this straight... the board is directional with a 1" setback stance right? And you moved it forward 1" to center your stance?
This is the reason why you had issues with board control. Never set your stance forward on any type of board whether or not it is a true twin, directional twin, or true directional. Due to the board's geometry, you are going to have troubles riding with a stance set forward.
Put your bindings back at the reference points. Then widen your stance evenly from there. Do it by one set of holes wider. Ride and see how it feels. Then widen it again. Ride and see how it feels. Eventually, you're going to get to a point where you're uncomfortable. At that point, you'll know what your max stance width is. Then just dial it back down to where you were most comfortable and you're all set.