Hi guys, so today, I wanted to take off the exhaust. As I failed, because it wouldn't come off, I wanted to put the screws back in place. As I tighten one of the screws, a little crack appeared (see attached photo). Should I be worried about it? What can I do to repair it? I would like to exchange the downpipe for a new one, but I am scared now, that whatever I do to it, its gonna make it even worse. Thanks for all responses