If you're encountering an issue where the #1 or #2 extruder are having too low of a pressure despite the adjustment of tension sliders is maxed out, try these A+ models to slightly lengthen the distance of between the motors… this will allow you to gain an additional .5mm of compress on the outer extruders.
Simply remove the 8 screws holding the unit together and replace both A parts with these A+ parts.
The author marked this model as their own original creation.