I think the problem IS that the landing gear is so close to the CG. I put a popsicle stick under the rear of my landing gear, retightened the bolts and maybe moved the front axles forward 1/2 to 3/4 of an inch. We fly on the grass, so when I taxi out, I've got full up elevator on high rate, until I get the plane rolling, to keep the tail down. Once I land, as soon as possible, up elevator. I'm thinking the landing gear should have been farther forward, or the tail of the plane needed to be a few inches longer. Mine has a Saito 82, and yes I had to put maybe an ounce of tail weight on it to make it CG. Sure flies as solid as a rock though!!!