Bear-BMG Fusion Cover Mod for Different Couplings

I wanted to use a PC4-M10 coupling (https://www.amazon.com/gp/product/B01IB81IHG) for the ptfe tubing that feeds my Bear-BMG Fusion extruder. Unfortunately the current design has a fixed hole that makes it hard to install without drilling, and my first attempt ruined the filament inlet.

So I remixed the original extruder body design to allow a cover on the extruder similar to the stock design. I also removed the lower grill that hindered airflow by the hotend heatsink.

The cover design re