W59 clutch fork pivot point question

Hi all. I have an 02 Tacoma 4x4 with 2.7 engine and w59 manual trans. Have an issue where slave cylinder piston is pushing all the way out. It appears to me hat there should be a ball on the pivot point that is inside the housing. It looks like that ball has fallen off/broken? Maybe? The fork will pivot if I push it, but there is really nothing for the detent spring to even grab on. When the release bearing is pushed up toward the pressure plate that leaves the outer end of the fork pushed all the way up against the casing where it comes through. Seems there is no way to get the seesaw action needed at that point. Problem is I have been unable to find a diagram. It does appear to be a removable part, as I can see it is made to be taken off by wrench. I am in serious need of my truck. Replaced clutch about 6 years ago, and again about 6 months ago. No issues until this last weekend. Is there supposed to actually be a ball there?

Thanks!

Tim