I worked each cowl separately so don't feel alone on that rock in the middle of nowhere ... Regarding the form in place seals for the cowlings, I'm thinking of doing this on mine. I can't do anything yet as I'm laid up after a Carpal Tunnel op. but I'm planning on doing a simple test first to see what maximum thickness I can use before the cam spring bottoms out. I'm expecting to get a seal thickness of 0.040"-0.050" on average. For the seal release agent, I'm using spray-on wax that I've previously used in fibreglass work as a mold release.