This is just my opinion... I have never been a fan of the XTR-95x series rear derailleurs. I have found, more than once, that the b-spring seems to be weak and has a difficult time supporting even the recommended max cog. Granted, mine were not new, but over time the spring seemed to lose tension.

I’m not trying to dash your hopes and dreams, and maybe I just bad luck. Hopefully others can chime in and dispel my feelings.

John