I just put my magnaflow exhaust, I was checking it out a few days later after install. Around the clamps I can feel a slight leak. I've tried tried tightening them, refitting them and trying to get it to slide in more but no fix. I was going to try this exhaust sealer stuff... should I, or should I be able to get the leaks to stop since its a new exhaust?

car 2.2, exhaust magnaflow cat-back