Im a novice at opening up and cleaning consoles, wiring, etc. And opening up the command wing and cleaning/ putting in new faders, was super simple!
I used alcohol to wipe the fader rubber, and just used pressurized air in small bursts to get the dust out of cracks.
In the manual it shows how to replace, by removing 2 screws and undoing the white cable. I followed these instructions, and was super careful. And everything worked just fine!
Just make sure you have the right tools, and just be diligent about being careful around the cables!