Note: as the Bearhawk kits have evolved, so has the assembly sequence, and it appears the various instruction manuals have been rendered somewhat misleading. Take today: earlier kits called for a stiffener to be installed at the rear of the wing prior to final riveting of the skin. Later kits use the same stiffener, but are designed such that the stiffener is sandwiched between the spar flange and the bottom skin. I only realized that after much head-scratching, web-searching, and a quiet but essential Eureka moment, confirmed via a call to Mark Goldberg, the company president. Fortunately, I'd only progressed to the Cleco stage--no rivets to drill out. Moved on to drilling and shaping a hole for the aileron cable to exit the wing at the strut attachment point. Moved on to the left wing, but when I realized I was misplacing tools and talking to myself, decided it was quitting time.