clio 172, mondeo td
I've fitted the cat back Ktec exhaust which I bought and it fitted together great, all in place and secure (so I thought) after a day or too the backbox as started knocking on the rear axle. It looks like it's twisted around a little bit, so I squared it all back up and it was fine again all clamps tightened up just a bit more the second time but when it's been used a day or two the backbox seems to move around and looks lopsided and it bangs on the rear axle again, am I missing something or do I need better exhaust fixings to keep it held up and in place, as anybody else had a similar issue?