Hey all - I have Dinan's exhaust and am getting a rattle in the chamber. This happened about 6 months ago and after cutting it open (warranty expired) found that part of the fiberglass was melted into these small hard marble like balls that rattle - just like marbles in a tin can... sounds horrrible. Worst part is ya cant shake them out... Dinan doesn't claim to know anything about it... and the sad part is that I haven't even been running the car hard... Anyone else have this happen to them?