The shroud popped off my ‘made in place’ mold with no problems. I am very happy with the result. You can see this in pics 1 and 3. Does it make sense now? A cover for my wheel cover but the sides at the bottom go straight down instead of curving inwards.That the duct I wanted.

…and Pic 2 is a hint of the many hours of clean up to get that really tough pour foam off my plane!

The shroud

Clean up

The desired result