FFCP and Others Right Fan Duct only

I removed the left hot end from my power spec pro (which is a cross between a Flashforge Dreamer and Flashforge Creator Pro) for various reasons. I needed a fan duct on the right extruder and Vexelius had created a dual version. My son fixed this up in 123D and got me a file with just the right extruder.

All credit goes to Vexelius for his design -- the change to do just the right side was pretty simple.