More than likely the cam chain tensioner is the problem and probably needs a cleaning. The plunger is stuck or the plunger spring is failing.
If the chain was stretched the rattling wouldn't go away after the oil pressure came up.
Proton LED Flushmounts - http://www.hightechspeed.com/products/Proton500/yamaha.html
I have them on my FZ6R and had them on my R6 too. Great product. It looks like they have the option of shipping to Australia on their website.
What do you mean by no luck? I just checked and Bike Bandit says they can have it in about two weeks. With OEM body parts, most places don't keep them in stock because they take up space. Even before the pandemic, it took a few weeks for me to get my fender from Bike Bandit.
I got it at Bike Bandit in 2019, before the pandemic messed up the supply chain. The blue fender is a good choice, the bike looks much better with it.
Look under the 2009 model year, there wasn't a blue fender offered on the 2013's. Bike Bandit says they are 1-2 weeks out, but I've always found...
I have a white fender off my 2013 (I swapped it out for a blue fender). It's in excellent shape. I'd sell it for $40 + shipping.
I attached a photo of it on the bike - I swapped it out shortly after the photo was taken.
From the picture, it kind of looks like the cowl goes over the back part of the seat. The FZ6R cowl replaced the rear seat.
Do a Google search for XJ6-F and you'll find lots of images that show the different seat.