RE: "Semi" Composite Tail
The balsa stab is 3/16" thick contest balsa, with a 1/4" wide 1/64" thick ply stiffner inserted around the perimeter of the stab.
The stab before fiberglassing was exactly .5 oz.
After fiberglass and kevlar 1.1 oz.
After the torque rods were installed, and filler around them 1.6 oz.
Really not sure If I can cut down on weight or not. If anything, I'm considering going with heavier balsa. Although the stab seems plenty strong enough, it does have a slight amount of flex.