There should always be some valve clatter, and it is typically the least when it's cold and no lash is present. As the engine heats up, the valve lash grows to about .010"-.012", and the oil thins out, and the clatter increases.
No worries. It's supposed to be like that.
It's only a worry if it ever gets quiet. That's when something is wrong.
What you have is an '08 AVL (Lean Burn). You should be on the AVL Forum (right below this one on the menu) with the rest of us AVL loonies
Go through the forum (or the Photo Gallery) & you'll find pictures of bikes like yours.
If it's a solid color with front drum brake the designation is AVL Classic.
If it's a combo of paint & chrome on the tank & fenders it's an AVL Deluxe.
If it has a front DISC brake it's an AVL Electra.
All the ES means is electric start. It's not a model designation. Avoid it. Learn to kick start it. The electric start & the sprag clutch are the weak point of the bike.
I have an '08 Classic & love it to death & I'm a lifelong harley rider (75).
There are false neutrals between each gear. Once you get used to shifting it, the false neutrals will be a thing of the past. The tranny wants to be consciously put in gear with the lever, not
flicked. You should feel the click through your toes as the gears mesh. The magic click, I calls it.
See you over on the AVL Forum.