<span style="font-family: Comic Sans MS">i just thought of one other thing. how do you balance a bipe? high wing planes, you keep them upright; low wing, you do them inverted. and can you use the top wing, or do you have to use the bottom wing? i thought i read somewhere, we'll say "someone", was using the top wing with a vertical line perpendicular to the datum line (but at the same point as markedfor theCGon the plan). the CG mark is located a 1/4 inch from the leading edge of the lower wing. makes it fun to accomplish. would it really make a difference which was used?</span>