I attempted to have an exhaust bellows replaced on my Mercruiser. After replacement it would not stay attached on the boat side connection point even after using the adhesive. I was told it needed to be just about an inch longer but this bellows was factory specs. I was told to not use the bellows but another product that does not attach to both ends. The noise while running is now louder than with the bellows. Has anyone had this same problem or can help me solve this problem?