More questions...

For some reason my Mustang ain't starting up very well. It takes about 5 times tryin' and when it starts running it runs rough. As the engine warms up it gets better. I keep smelling fuel in the exhaust though, too rich I think. But what do I know? I might get new plug cables and maybe even upgrade to electronic ignition...

Anyway, I also noticed something else today that has me a little worried.

The bit in the red circle is shaking a bit and I'm wondering if this is normal.

Here is a short movie that makes it a little clearer: