24/05/2018: Updated to v2 which reduces filament by about 25% and print time by about 15%.
This will support the Z-motor and align it to prevent the leadscrew from binding. You will no longer have to use paper/card or leave the motor loose to prevent the binding.
Check pics for installation.
Rotate the model in Cura like I've shown in the pic before printing.
I used 50% infill as it supports the Z-motor so I wanted to ensure rigidity but you can probably use less.