This mod is used of PTFE inserts and rises the ramp by 2 or 6 millimeters. This is helpful for plates that deform due to material tension in the printed part.

( ! ) IMPORTANT: you will need to install this pusher add-on as well. (https://makerworld.com/en/models/1093569) Otherwise the plate can fall underneath the heat-bed while ejecting (especially when you install the 6 mm raiser version).