I am working on getting the IV smooth cowling to fit properly and it seems that the few IV smooth cowl builders in the past have had to cut and modify the shape of the cowling around the prop flange. I'm about to perform this operation. I'm unsure what would be the best fiberglass cloth and resin to use on this project. Anyone have some recommendations?


This top picture is my cowling and the last two are what I'm going to be performing.