How to fix the Valve Index controller squeak

How to fix the Valve index Controller squeak. What ACTUALLY causes it. What to do and what not to do.

iFixit Valve Index Controller Strap Replacement Guide
Grease - Super Lube 21030
Sources

Chapters
0:00 - Intro
1:15 - Bad recommendations
3:56 - Preface to repair methods
6:24 - Process for disassembly
12:12 - Process for repair
15:31 - Grease
17:58 - Recap
18:58 - What not to do
20:16 - Recommendations / know your chemicals

[AngelM]

Ill take this in mind when i get controller squeak

[reepusvanguard]

God thank you so much, ive been having this issue for so long

[philipp.mp]

putting the strap-spring back was the most annoying part of the entire fix, but with enough time you can do it

[HOMICIDE]

i can fix it. send all of it to my address please.