All I did was measure from the leading edge back to 9 1/2" on both sides and made a mark on the top of the wing right at the fuse. Then I had mounted a couple dowels on the workbench with padded tops.... flipped the plane over and used those marks to balance the plane on. I also balanced it laterally ... be sure to check that... I ended up having to put 3/4 ounce in the servo bay of the right wing. When I took it off, all I needed was 2 clicks of down for level flight. It really is a very nice plane to fly ! It figures that once I get one and get it maidened the weather here drops off COLD.... Let me know how it balances... Mine weighed out to about 13 pounds... not sure if that's heavy or not.