(Originally posted this in the other smaller PS4 sticks thread)
Finished modding my DualShock 4 with Xbox One analog sticks. It feels so much better now. Be warned it's pretty fiddly if the triggers (and their springs) pop out during disassembly. Nothing that can't be rectified with precision and patience though. Another thing I'll add is that you shouldn't tighten the screws too much when re-assembling, else the new XB1 sticks will chafe against other internals.
I used
iFixit's guide to aid me.
Apologies for the poor quality (and dust!). Lighting is bad and I'm using a phone camera.