My 46FX is mounted as far out on the beams as possible and I have a 5cell rx pack as far forward on top of the tank as possible yet I still need 5 ounces strapped to the cowl cheek things opposite the muffler to get it to fly the way I like. It really flies like crap if I take the weight off. I've experiemented for months on this and this is what works for me...

It doesn't seem to have affected pull out from a hover TOO much but maybe I notice a little. Otherwise handling is the same, floats like it always did.