The other day my exhaust pipe split right at the front hanger, I was backing slowly off a curb and as my front right tire reached the ground my wife and I heard a loud thump,as I put it in Drive to go forward I could hear the roar. #@$%! I did have my Lance camper on at the time, any thoughts as the cause of this, There appears to be no rot involved as I have only 40,000 on it. I was pricing out new systems does anyone have a favorite, I know this time it will be stainless and 4 " (?) Flow master? Banks? any recommendations?