"Paint Can rattle"

Mates got it his 2014 RT **** himself and replace all he could made no difference , 10 K later no problems he just don't listen to it .
I have a 2012 done 60k no rattle so l would think there would be a fine tollrance that is not been meet some where
 
Mine makes a horrific noise if the exhaust cover on the right side isnt lined up perfectly. Taking the crossover box helped alot
 
So what actually is this "paint can rattle" that I often hear from the L/H side when accelerating a little ?
It sounds like pre-ignition, but know it's not that.

Can you make a video Paul?
 
Well Paul @Paul Bryant , mine makes that noise when a somewhat squirrelly set of headers needs tweaking and retorquing.

HOPEFULLY that's not your issue...................

( for the record I do not have one of Pauls exhausts.)
 
Can you make a video Paul?
I've just recently bought a Sena Prism tube camera Arto, I've been experimenting with this but as yet no decent riding video's to show.
This paint can rattle noise is quit random, so I know it's nothing mechanical.
But if I get it on one of my ride vids, I'll let you know.

Cheers.