Mick 53, Thanks for the reply.
However the retainer in this clutch for is not the spring or "hairpin" clip in a recess. But, rather flat spring stock stamped like a two-prong fork, open on the end, Oreilly part #CF 100 or Dorman 14550. The pivot ball is adjustable so it can be removed from the bell-housing, placed into the spring clip groove, then replaced in the bell housing. But I understand that the pivot ball adjustment is critical, so I am reluctant to remove it.