I think I found the problem and I don’t think you guys would have ever guessed it. With the engine running, I was running my finger around the top of the carburetor to see if it was seeping gas when I noticed the sun glinting off a fine spray of liquid coming from the front of the engine. The plastic gas filter I had installed where the gas line curves around the valve cover was dripping gas and the fan was blowing it back onto the carburetor. I hadn’t touched that when I rebuilt the carburetor so I was focused on the stuff I did touch. It was a pretty big leak - about a drop a second falling down on the manifolds. As soon as I tightened up those hose clamps, I didn’t see any more gas on those screw at the base of the throttle body. But now it’s time to put Raymond in the barn for the winter. Hopefully it’s fixed but I’ll have to wait until spring to make sure.
Thanks for all of the help.

My dad always told me, "Don't force it, get a bigger hammer".