Empennage: Elevators. Trim tab trailing edge riveted.

Elevator trim tab trailing edge is riveted.  Because these trailing edges are much thicker than those of the wedges used in the other flight control surfaces, it's much easier to preserve the straightness of the edge.

You can see the 3M F9460PC VHB™ Adhesive Transfer Tape sticking through.  In the future, I would use sealant for 1) a nicer look and 2) some semblance of corrosion protection.  In fact, I ended up using it on the left elevator only because I had already mixed it for the foam ribs.