I replaced one of those foolish graphite exhaust system gaskets on the Stelvio a while back, and now it's blown again - so I likely messed something up.

I have never had an issue with these on the Norge, nor on the Griso (though with far fewer miles on that one).
I welcome any tips on how to replace one of these in a way that provides a more permanent fix - whether in terms of how to replace it with the factory product successfully, or other alternatives.