Guys - a normal balancing point on a clark y airfoil is about 33% MAC. On the Storch which has a clark y, the LE slats shift the COL of the wing forward so the balance point must also be moved fwd. 33% of the MAC including the slats is OK which winds up to be about 22% of the MAC w/o the slats. Err of course on the nose heavy side.
Rob Caso