Am i right in saying that the problem is not only limited to the wings though? I have seen a jet go up and then when pulled up/down to it would always roll slightly to one particular side. The problem: batteries all on one side of the fuse. Wouldn't it be much better to laterally balance the whole plane in flight ready condition to take into account the overall weight of the whole plane, not just the wings? Even though the weights in the fuse are on much smaller moments they will probably still add up to be more than 23 grams on the wingtips (where the weight difference probably didn't come from anyway).