I fly mine with the cg at 4 1/2 and I think it flis fine. to me it is still a little on the nose heavy side and I will start moving it back a little at a time. I haven't weighed mine but I know its pretty light for its size. I am guessing about 12.5 pounds. You might try 4 inches, we all like things a little different. But I have heard of guys flying in the most reaward part of the cg. Did you balance your upside down? I did as I think you are supposed to. Happy flying