Worked on the trim tab a little more, mounted the HS and drilled the horns. Measured from firewall, baggage bulkhead and also from fresh air intake to tips of HS. Measure in perfect - 153 1/8" from firewall. HS incidence angle is right on with spacers under front spar angles and 11/32" drill bit under aft spar.
Elevator Horns do not line up perfectly, which is fairly common from what I read on the Forum.
