Filament spool backlash remover

I made this small "mechanism" to prevent backlash tension (specialy when retracting) of filament spool. (This is for 53 mm spool hole) UPDATE: I ended with breaking two arms on stoper2 part to adjust tension in forward direction.Because of that i made two aditional versions of stoper2 (so you don't have to break freshly made parts :-) ) Small adition is adapter for 6mm thread in spool holder.