Solidoodle Springloader

The original thing 44572 wouldn't work for me because my teflon block was too wide. I reproduced the same idea with openscad so I could adjust all the dimensions and added a nut trap while I was at it.

This does a great job preventing the head from rocking and messing up the print when it moves near the back of the print bed and the wiring harness and/or filament start making the head move.