with mine, the issue was the drag of the water on the downpipe, so a horizontal pull. once i secured the exhaust better horizontally with screws to the exhaust outlets i had no issues. it looks like you have rivets securing the pipes to your outlets, so that should be effective; if you give a good tug on both of those without the vertical support do they feel really secure? otherwise, all that vertical support will do is rotate in an upward arc as the exhaust comes off. if you put one more pin through the vertical support at the top though, that will keep it from being able to rotate outwa