Hi i just want to share the way i used in order to be able using 1.75mm bulk filament:
Before that every second print i had to tighten the screw that holds the stepper counter - after
doing those steps i had more that 70-80 hours of printing without any problem..
I disassembled the print head cover and released fan+ light sensor screws.
took out the pulley (black and white circle) and grind small amount of metal from it (see pic 1).
then i noticed the pulley has a small bulge on the back side which fits exactly to it place every time you tight the nut back.
Therefore, every time you will tighten the screw to the pulley will be aligned to factory setting and not to 1.75m - and that we don't want !
so, i grinded the hole that which the bulge fits into (the socket on the chase of the print head) then i had free space to determine how
the pulley will be.
Now everything working just right, without any need to tight the bolts.
you don't need an expensive device to hack your cube printer in order to use bulk filament (read the first post).
Just use "Crap hack" steps easy. the guy that sales those chips should consider lower to price.
paying for the "hack device" more then 15$ is a really bad joke..