I did a center of neutral check by hanging the plane level from a string attached from nose to tale,and the result is 14 inches from the trailing edge of the wing. Thats a 2 inch difference. I'm going to rebalance at 15 inches and see what I get in lead reduction from the nose.
With the CG 2" rear of what it is supposed to be (16" from TE), the plane is tail heavy (not enough weight in the nose), not heavy in the nose as you imply from the above. You will need to add weight, not remove weight, in the nose to get the balance right. Strongly suggest that you balance it as Laddie recommends, and simply marking the 16" under the wing (I always use small strips of Monokote to mark my CG locations) and then placing your fingers at those spots will easily tell you if the balance is correct. Not sure that the method you mention is accurate with the design of this plane.