Hi All, 2 times this season my exhaust bellows slid off the transom side of the attach point. It was installed new the bgining of the season using QS bellows adhesive per the Merc. MX Manual. I dont know if the mating surface is contaminated,(I will clean & prime next season).1998 Alpha 1 Gen. 2. Seems to me like the flange could use a lip at the end. Thanks in advance for any suggestions.