The lesson learned today was that when you get a bunch of parts, unpack all of them and make sure they're all OK. I didn't do that with the Zippers pushrod covers. My guess is that somebody returned these to Zippers who didn't see what the problem was and they sent them on to Nallins. There was a torn plastic parts bag in the package, a missing o-ring, and a jammed collar.

This morning, I pounded the aluminum tube from the chrome collar with the aid of a socket and rubber mallet. I managed not to bend the tube but the collar distorted a bit. The indent became an outdent in getting the collar off. Another socket and some judicious banging gave me the indent I needed for the keeper.