You might try shortening the tail!!!!!!!!! Ha Ha!

But seriously, that's alot of weight!! Expecially for an electric. Although, you say it flies fine. With the swashplate level with the main shaft, left, right, forward and back, blades straight or even removed, holding by the paddle bar add clay to the nose until the skids are level or what you want for level. This is the amount of weight you'll need.

Keep Flying,

Jr.