@tluck, First time setting up a system like this. I followed your guide the best I could, but I'm also working with a T420s. I seem to be up and running quite well. Sometimes the trackpoint won't work on a restart, but returns after another restart. My main issue is the audio doesn't work. I tried installing an old AppleHDA kext and it got my speaker and headphone working, but the volume seemed about half of what it should be, so I reverted to the kext in your installation package. Not really sure what to do.