I mixed up some epoxy/flox and riveted on the oil door latches. I then placed a couple of layers of 8 oz cloth with a 1/8″ fiber core for stiffness. This will substantially stiffen the oil door to prevent it from bowing out in flight. To ensure an even tighter seal, I’ve slightly flattened the oil door (that’s what the blue tape is doing). This will ensure that when the bottom is latched, the middle of the door will be tightly pressed against the cowl.
I also put a couple of layers of fiberglass over the side of the hinge bonded to the cowl. The top layer you see in both layups is peel-ply to wick away excess resin.
