Replacing Z axis lead screws

I’ve been having trouble with my brand new P2S and supposed “z-banding”. Bambu Labs is sending me a lead screw kit to replace the z axis. I looked at the wiki on how to do this and am very lost at the directions they give.

Within the instructions they have you take out the inner lining, and send you to a separate link to do so ( Inner Lining Replacement Guide for the P2S | Bambu Lab Wiki ). This like has like 5 other links, which basically has you take the entire printer apart…

Has anyone actually done this yet? Could use some advice because I’m getting no help from the customer service team.