I got my Horz,Stab mounts bolted on and I must say what a pain in the a$$. I immediately changed to a way that I fill is much stronger and of near the same weight. I inverted my fuselage and glued in Maple hardwood blocks under the ply that is bellow the Horz. stab. I added 45 degree strips to strengthen and put 3 each side on each blocks 2 inch Stainless steel screws horizontally into the upper longeron and up right. I then made Alum angle mounts with the option to set incidence +/- if desired. Also gets the tail wheel in a good work position.