Just following up on this topic. IT seems we are about 90% of the way there. The icon has shrunk, but not it also appears to have shrunk for the display in the post, like what you see to the left here.
I have that option already selected, and I am running version 2.6 of the theme. No luck on that. The thing throwing me off is that when I browse through the stylesheet I don’t see anything that is related to avatars or bbpress or buddypress.