Vertex Delta 3D extruder upgrade

The Velleman Vertex Delta 3d K8800 comes with a filament spool holder on its top, laying position, with direct filament injection. Not only is that destroying the extruder entrance very fast when using more abrasive filaments (Wood, metal), but it also messes up with the filament end detector that goes crazy, as it detects the filament by being pressed down, but the filament comes from up... So you'll end up with a lot of false positive, even with high precision filament.

I have many differen