Have an exhaust leak and found out the culprit is the cheap rivets HM put on their box. You can see where the rivets are gone (i punched the bad ones out) and where I tried to put some screws in before realizing the whole thing had to be taken out. HM doesn't make this box anymore so my plan is: punch out all the rivets, put bolts with neoprene nuts where every river is and treat the thing for rust and paint it. This post is just a warning for those that might have one of these. And if anyone has any other suggestions please let me know.