How do these gears/sprockets look to you?
 

The intermediate shaft gear obviously needs to be replaced, but how do the rest of the gears look to you?

http://forums.pelicanparts.com/uploa...1763865255.jpg
http://forums.pelicanparts.com/uploa...1763865255.jpg
http://forums.pelicanparts.com/uploa...1763865255.jpg
http://forums.pelicanparts.com/uploa...1763865255.jpg

Yeah the aluminum gear is definitely pitted on the teeth.

For the chain sprockets, can you catch a nail on any of the wear marks? Like on the side of the teeth.

The best way I have found to check chain sprockets is to lay a new chain on the sprocket and lift it in the middle. If you can lift the chain off the sprocket easily the sprocket is worn too much. What you are visually looking for is asymmetric wear in the sprocket trough wear the chain sit down in the sprocket.
The few shots you showed look pretty good.

Thats a gut-n-quick method for checking motorcycle chains too.