Printrbot Extruder Fan Mount version 2

*update: I had a flaw in my original design where it ran into the frame. I updated the design to hook over the top edge now. Works like a champ. I also wired my fan to an old wall wart power supply 9v (yes, underpowered but its what I had) and the motor is cool to the touch the whole time.*

I have a Printrbot Simple (v2) and I've been printing non-stop with this little thing. Sometimes when I print too long the extruder motor starts to heat up the filament feeding area, which can cause th