[Raptorfly]

Shame about the landing gear George.
As I had to add 250 grams of weight to the cowl of my Tucano to balance the plane, you might want to re think your motor choise. I will stick with what I have for a few more flights and even though it flew well, I am looking at bigger power options purely for more instantaneous response from throttle input, but don't let me put you off what your up to... just keep it in the back of your mind and watch this space.
The biggest issue of running a larger motor is where to put the extra battery.... anyway as I said it flies great, I just felt it needed a little more power.

How heavy was your motor?
How far did you push the Battry forward. Did you go through all the way to the fire wall?
My SK3 5055 430kV motor weight is 378gm.
I can go 8S to add weight and power on a min 16X8 prop..