While the glue was drying, I noticed how the T/E of the stab was open, and remembering that it's capped with 1/4" stock. I thought that only a 1/4" of material for the hinges wasn't enough for a secure bond. So I decided to add some balsa blocks where the hinges are going to be located. Stock configuration is 2 hinges per elevator, I'm going with 3 hinges per elevator.