I'm using a Kyosho blade balancer to set the balance AND the CG of the blades. I loosened the anchor bolts and replaced the "drag bolts" with a couple of toothpicks and snugged down the drag bolts again. After balancing, I then put the original bolts back in and checked the cg of both blades. If there within a mm or so the you should be ok, But if there spread out farther you want to match the cg of the " heavy blade" on the lighter blade. Once you find the cg, mark it with a felt tip pen and line up the blades and mark the second blade inline with the first. Then it's a matter of adding tracking tape or scotch tape to the light blade where you marked it until it lines up at zero on the balancer.