You want to balance the airplane as a unit, not just the wing. Not sure if that's your question. The receiver and battery are two things that can be moved to alter fore/aft (CG) and lateral balance also. If the engine is mounted on its side also affects lateral balance, but it's negligible. The Kadet can be bolted together and flown without checking CG - not wise, but it's designed to be a no-sweat build. <div>Anything can be used for weight at the wing tips: nails, washers, pennies, etc. Lateral imbalance has a greater effect as the plane gets smaller, since the percentage of weight is greater (1/2 ounce off on a .25-size plane has a greater effect than 1/2 ounce on a .40 or .60-size). Unless something was quite far off, not very likely in your case, the imbalance will be very small. </div>