I checked everything was still level and aligned properly then drilled the front lower spar angle to the aft deck, spacers and longerons. I used my angle drill and step drilled from #40 to the final #12. Then rechecked everything and final drilled the aft bolts. You are permitted up to 1/4" difference in the distance from the aft outboard corners of the stabilizer to a reference point on the fuselage and I managed to get it to within 1/16". I also checked the stabilizer has zero degrees incidence by inserting a 12" drill bit through the tooling holes at the front and back comparing the distance to the F-887 longerons. Next up is the vertical stabilizer.
