I see the clip you're talking about in dadsbee's photo, but that's not what I was talking about. If you go back to my original post, I'm pointing the the position on the adjusting rod, and I referred to a page from the FSM that calls it a "retainer". I've come to the conclusion from the responses that there never should have been anything resembling a "retainer" on that rod and that the FSM is just mistaken. I will find a suitable foam material to stuff into that area as anti-rattle and be done with it.