My SRAM X01 type 2.1 rear derailleur just broke.
The clutch didn't work anymore, so I thought myself super smart and tried the fix which always worked for my type 2 X01 from last year.
But they apparently improved the clutch in such a way that right this trick breaks it. And it still retains the ability to stop working after a couple of rides ;-)The end of a tiny spring actually broke out of the plastic part near the clutch. And I really barely touched it with the allen key.
Long story short, I'll buy a XT 11spd RD and trigger for a lot less than the 200$ replacement SRAM RD. They are nice and light, but I personally had to warranty four! X01s and xx1s. Then I read how to repair them and cure the creaking and could live fine with that etc. But with this 2.1 iteration, you're stuck without self repair possibility.
So, DO NOT try to fix your 2.1 type clutch. Warranty it. Saves money ;-)
The XT 11spd doesn't seem as crisp shifting, but at least I expect it to be reliable.
type 2.1 has the pin. If you want to adjust the clutch, you'll have to pin the pull out before you crank the cap with 8mm allen key