Used acid etch and alodine on trim tab spar. Forgot to include it in the epoxy priming process. Primed and painted the trim tab surface where the trim tab horns attach. This would be inaccessible later and thought some protection is better than none. Glued in the foam ribs with proseal according to the plans. Riveted it all together. The longeron yoke for the pneumatic squeezer worked great here. Had to drill out the bottom rivets where the tab horns attached to put in the spar. I still need to work on the folded ends next to the elevator as the clearance isn't good enough.
