Exhaust flap grating on ignition start/stop

[Jumblemo]

As per title, I've noticed a scraping sound when I turn on the ignition and also when I turn it off. It's coming from the centre of the exhaust so I'm sure it's the mechanical flap. Concerns me that it might stick open or closed soon. Anyone else suffered this?

 

[patzx12]

Mine has started to squeak, thanks for reminding me.
I will go and blast it with copper spray.

 

[specs]

As per title, I've noticed a scraping sound when I turn on the ignition and also when I turn it off. It's coming from the centre of the exhaust so I'm sure it's the mechanical flap. Concerns me that it might stick open or closed soon. Anyone else suffered this?

I had mine replaced under warranty about a year or so ago. The whole of the exhaust system was replaced except for the can and would have cost about £800 if it hadn't been under warranty.