I was trying out the Sunlu filament. The spool ID was large, causing the spool to hit my Z knob from time to time. I designed this adapter. It fits over the nut. but doesn't hang too low. This should also decrease the amount of torque required to rotate the spool.
Print 2 of these
inserted one on each side
clock 60 deg from one another
Insert 3mm Cap screws in one side.
If the holes wear out on one side, use the other set of screw holes on the other side.