I made a wing profile out of MDF wood from the template supplied to have a reference to install the leading edge. Bond prepped the front spar and then needed a while to correctly position the leading edge extrusion in place. The wing sweep makes the leading edge slighty twist clockwise going outboard. Sanded the contacting part of the extrusion and temporarly taped it onto the front spar. Applied the hysol and firmly taped it into position. Correct position verified after having hysoled it in place.
