Tonight, I stopped by the Home Depot at 8:45. This is a pretty good time to go. Since they close at 9:00, everyone who is ambling through the aisles asks you "can I help you?" which is actually their way of saying, "what can I do to get you out of the store so I can go home?"
One horizontal pivot rod and one universal flapper later, and I'm in the big line at checkout at 8:50. Cue the extra checkers... again, "what can I do to get you out of the store..." and I'm out the door by 8:55.
And by 9:15, both my plumbing repairs are done!