Mine is not cracked like that -- mine is tiny HAIRLINE cracks that just follow the part line (weld line) where the tubing was butted. It annoys me only in the fact that this exhaust system was several grand...
They hard mounted the system - and that was their first mistake - and I think it was that initial expansion and contraction with it being hard mounted that set up the hairline cracks... It's since been re hung allowing for some movement.
My system "grows" at least ONE INCH in length... And Tim came up with a masterful redesign of the hanger to accommodate that.