During all the baffle work the top cowl comes on and off a million or more times. The bottom about half that. I left the horizontal hinge loose from the top cowl to make install and removal easier. I am about done with the baffles so I drilled the hinge. With this clecoed in place the cowl is very rigid. It feels like you could pick the plane up by the cowl. Giving a picture of the spinner gap and it came out very nice. Still a little sanding and filling but not bad.