Nose heavy. Ok. Well, one thing you can do is make darned sure you are using the right point on the wing for measuring the CG. Next, move the motor back if you can. You can also put the battery in the back of the plane. Other than that, a little weight in the tail goes a long way to help shift the CG rearward, something like a 4 : 1 ratio. (four ounces in the nose = 1 ounce in the rear).

CGr.