WildChild, it did not come apart simply by cleaning it, didn't you read my response to you in post #6?
I know SF added a metal cylinder around the white plastic, there is on in my new style Z59. But this one worked fine until it came apart. I don't need a new one; I just need to put THIS ONE back together. Why do I have to repeat myself so much?!
ANYWAY...
I found a tiny spring on the floor which must have missed while looking for the errant pieces. I managed to reassemble it in the proper order myself. Solution in next post.