Thanks Neighbor to the East. My OS .61 FX is mounted to the side, built up balsa enclosed, using a plywood spinner back plate and balsa blocks forward of the firewall. Old RCM article. Much nicer than a screw on plastic cowl. And fun to make. 5.5 pounds using Titebond and epoxy. No CA. Monocote insignia blue and white. Balances with the battery behind the pilot.

Cover stabs, all control surfaces, then attach. Assembly and gluing hinges should be the last part of assembly. I bought Harry Higley's book on film covering. Perfect instructions for this plane. Great technique on covering those wingtips. Cover them first, in pie-shaped pieces. Don't forget to install that leading edge tip block. Seal all hinge lines with iron-on, top surface. Seal overlaps with trim solvent and a q-tip.

Throw away every screw from the kit and use bolts with nuts or blind nuts. And Loctite.

Make sure the tips are straight while covering. The light ply can flex when covering is tightened.