It's the same for any SRAM shifter - Google it and loads of people have done the same, including me on an X9 shifter.
I did try googling it but could only find people taking apart the X9s which are similar...but not similar enough to help
If it's the circular spring then it's a real PITA to put back in. Been there broke that.
Yep the circular spring, a MASSIVE PITA, I won't do it again in a hurry
I foolishly took apart my right x9 shifter thumb screw too.
Bent the spring good and proper too.
Took me seriously about 6 hours of ****ing around with it over the course of a couple of days until it finally screwed back in without trapping it. The downshift is a bit saggy now and I keep meaning to get a new one.
I've spent about 5 hours over the last 2 evenings trying to get them both back together. Whilst I did get the rear one back together I wasn't happy with it and took it apart AGAIN!
Now I can't get it back together again...or the front one!! I've got sore fingers so I've given up.
Luckily I ordered a set as a backup from Merlin this afternoon for £38, which hopefully will be with me tomorrow so I can be riding my bike this weekend.
Atleast I've managed to put some new brake pads in tonight without destroying anything...though my back brake needs a bleed. Bloody hard work this biking lark