Getting ready to install the new HS and VS. First ensure the fuse is level fore and after, and side to side. Place the HS on the fuse aft deck, using the F810E spacers for the forward HS spar, and a 3/16" drill bit for the aft HS spar clearance to the fuse aft deck. Centered the HS rear spar and measure end points to make sure the HS is as square as possible to the fuse.