I've finally done it, a perfect first layer in progress
One painful firmware update later and the z-offset bug that has plagued me since getting the Neptune 4 Pro is finally resolved and first layers are good again just like that. I just had to share the thrilling end result.
Don't forget to swap the springs out too. At least for me my Neptune had trash springs that couldn't hold tension to save its life. I bought a cheap set on amazon and i stopped banging my head against the wall. Mind you i have the plus, so maybe not an issue for the pro.
Silicone "springs", plus printed thumbwheels without a ton of clearance for the leveling screws, really helped my i3 clone a lot. I could go multiple prints without having to relevel! It was like a dream.