I like what is going on with this wing. The stick on the leading edge gives a good straight reference.
http://www.rcuniverse.com/forum/rc-w...l#post11937513
Building this wing was not hard, but getting it straight was. I think that some of the tabs are the wrong size. No way to know that though until you lift it off the board.
Another thing to watch, which may not matter since this one is not flying, are the angles of the maple retract rails. Mine are about 1/8" out. So, this causes the axles to not sit parallel with the ground. Also, the wheels go too far into the wing. A fairly easy fix, but something else to do.