Used the fabricated H-bracket install tool, worked like a charm. Had a little adjusting to do to the H-bracket as it was being riveted in place, as the manual stated might happen, and came out fine in the end.

After H-bracket install, reattached tail tube to fuselage and secured at front of tube for final time. As the rear of the fuselage was being secured, I found the 6 3/8" bolt I should have received with the kit was in fact a 7 3/8" bolt, so I will have to look in to purchasing the correct one so I can continue that part of the assembly process.