Flashforge Creator Dual - Single Fan Guard with Filament Tube Guide

This is a combination of the following two designs:

http://www.thingiverse.com/thing:107294
http://www.thingiverse.com/thing:26040

I removed the left extruder from my carriage because I never did dualstrusion prints. I printed a spacer to use the stock extruder head bracket but it rattled so I made this.

Here's the design on TinkerCAD if you'd like to make changes:

https://tinkercad.com/things/i1b5SnYf0yV-flashforge-creator-dual-single-fan-guard-with-filament-tube

I use a flexi