Mine was tip heavy on the side that the engine cylinder is on. I just slit the covering on the bottom, just inside the last rib at the tip. Now I glued the needed weight to the rib and put one of the supplied decals over the slit. Hanging the airplane to check lateral balance is a problem. I glued a strip of light ply across the fuselage at the CG. I drilled a hole for a 2-56 T nut exactly in the middle. On the outside I screw in a 2-56 eyescrew. Now you can hang the airplane upside down with a string through that eyebolt. Now you are checking both lateral and for and aft CG. I mount one of these little eyescrews in all my airplanes. You can unsrew it when you are done.