Picture or it never happened!In my case the chain was grinding thru the metal on the swingarm and had worn down the head of the guide mount bolt.
I got a new chain/sprocket @ 2900km (1900mls), now at 9500km, NO PROBLEM
This was the start of my swing arm problem
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I sent them pictures of the chain grinding away at the swing arm and had the dealership retest the chain tension. The bolt was sheared off after prolonged riding and I was getting pissed.
After being told by DNA that it is only a chain tension issue, I contacted Italy.
All of a sudden my swing arm was removed and sent to CA for adjustment.....go figure