I have an '07 Deuce and my primary has developed a noise that only happens when in having engaged a gear and then put into neutral. I thought it was a case of a loose chain or sorts.
I drained all oils (I had to do a change anyway), adjusted the primary by 2 notches. This gave me a "slap" of 3/4".
The cover had a wear mark from where the chain was hitting it - near the bottom front.
I dremmeled the wear just enough to smooth it out without taking off any excess.
Cover back on, filled with oil, and still a noisy primary - not nearly as much but still there.
I didn't notice any wear on the automatic adjuster.
New adjuster and chain is needed? or any other thoughts?
Thanks in advance for any help

 

Compensator nut?

 

Got to admit I didn't do any kind of inspection of that but nothing seemed out of the ordinary other than the wear on the inner part of the cover.
I am considering taking it all back off again and replacing the chain and adjuster. Though (I think) it's still early days to be replacing those - approx. 20,000 miles.