boothay

Hey guys, Kevin here long time mustang owner. I previously bought the pipes cat deletes, ran those for a while with the stock mid pipe. About 2 months in my stock mid-pipe developed a crack in the H crinkle. I had to replace it and the pipes X-pipe wasn't available so I went with BBK. I know I should match them up but it wasnt an option at the time since this is my Daily Driver. So to make a long story short, I cant seem to get the exhaust to seal. The factory band clamps that are on these things leaks at the open end where you tighten it down. Its leaking at both ends of the headers and yesterday I had it on the lift and I noticed both clamps are also leaking at my muffler when it comes out of the over the axle pipes. Has anyone ran into this problem? The sleeve clamps after the mid-pipe are not leaking in which its hard for them to leak being that they cover the pipe and seal. Please help....