Hi everyone. I’m trying to fix this z banding issue with my Ender 3 printer. I’ve tried a lot of things now and still it has not made a difference. I’ve replaced the coupling on the z stepper motor to a flexible one, checked the z rod is straight, aligned the z rod correctly and experimented with tightness of the ecentric nuts. All these things did not change it. Please could someone help me. Thankyou