I have a clutch/ brain issue

[O Repo]

05 mastiff jus changed over from 12 disc to 9 disc changed actuator all went well except . Let me back up so I don't look like a total tard. I had clutch problems 2 yrs ago , wouldn't fully disengage I had a lot of help from you guys and I thank you for that but it was never resolved . The state sent me on a couple year vacation so to speak . Now I'm back and decided to change my clutch to the 9 disc. When I pulled the primary there was a small bearing jus laying inside it has an indention where the actuator rod meets it. I looked at it and (I know better) assumed it mounted in the center of the pressure plate but there is no keeper so could someone please tell me where it goes before my fn head explodes . I would greatly appreciate it