Used this guide to replace the keyboard on my late 2015. When I got it all apart, the keyboard wouldn’t pop off. After carefully removing the black cover that’s secured with adhesive around the perimeter (visible in photos in the guide) and the clear plastic thing below it, I finally accessed the keyboard itself. There were an enormous number of very tiny phillips head screws securing the perimeter, which I removed. Still holding the keyboard in was maybe 50 or so points, between all the keys. Initially they looked like spot welds but were more like rivets, where the aluminum of the case had been peened through holes in the steel part of the keyboard. I started by drilling these out, but quickly found out that they just pop pff with some force, but certainly destroying my water damaged keyboard. I placed the new one on and replaced the perimeter screws. After reassembling everything it works great. I thought the keyboard might be mushy but it’s not. I was glad to have the 64 driver set. Thanks Ifixit!