Mini Kossel Hot End Dual Fan (40mm + 30mm)

This is my first 3D OpenScad design, so please be kind. This is a modified version of the hot end fan by Johann Rocholl. The Mini Kossel master zip file can be found at https://github.com/jcrocholl/kossel
It has been specifically sized for a J-Head hot end.
I added a 30mm fan with a duct to blow cool air across the printing part. I have uploaded to OpenScad design file in the hopes that someone can improve on it.