Use a drill bit to make a camber in the threaded ent of the connector for the filament tube.
I couldn’t put in a picture, someone tell me how to?
Heres how to include pictures.
Go to tinypic.com or another similar service.
Upload the picture you want, selecting sice etc. Suggests 17"
Once it says picture is finished copy the url text in the box intended for forums etc and paste it in to your reply.
Yeah it’s a nice quick and easy tweak I’ve done early on using the printer.
Good idea to mention this one!
Kind regards
JeAfKe
What exactly does this help? Not sure what you’re going for here 
I think it maybe to guile the filament into the tube of the extruder a little easier.