This is a remix of @mico 's filament guide. 

I reinforced the angled part of the print and I also thickened the portion where the screw anchors the print to the mounting surface. 

I also noticed that the hole for filament was a little too narrow. (It may just be that my printer's tolerances are off) 

I widened the opening slightly, filament now reliably slides through freely 

As with the original file, if you are interested in attaching a PTFE tube, the file is designed to seat a PC4-M10 connector 

There are two profiles: 

First is most similar to the original file, with a flat mounting point  (MS)

Second has a tapered mounting point when using screws with a tapered head (WS)

I printed with SUNLU High Speed PETG 

Thanks for taking a look, rate leave a like and boost if you find this helpful!