Make OS X Mail show the most recent message in conversation

I like how Mail groups related messages together in a "conversation", but I hate how it always by default shows the oldest unread message in a thread--even if it is months old! This has gotten me on a couple of occasions where I will see a new email come in, click it, and see a message from months ago, but not realize that I'm not seeing the one that just came in.

Anyone know how to make Mail always scroll to the top/newest message in a conversation when clicking a message?

In Mail preferences, at the bottom of the Viewing pane, under Viewing Conversations, there is a checkbox to Show Most Recent Message At The Top. I think that's what you want.