Z-axis fix for 5mm banding?

Looking at the Z-axis holder kit: https://www.cetus3d.com/shop/index.php?route=product/product&product_id=70

Seems like the Z-axis stepper has a new bracket. Does this fix the 5mm banding issue? Or have you found another fix? Are you planning on making that fix available to existing customers?

the Z-axis stepper and the  bracket are not the cause of the banding issue.  We are improving the precision of Z axis, and would provide the solution to eliminate the banding.