I have a massive noise when it rains! I've heard it is the exhaustpipe bouncing on the "propeller" (drive shaft) when it's cooled by the rain water. The dealership put a bracket in and said it was all set. It fixed the issue most of the time. I will get this noise after about 1.5 hours of traffic driving in the rain.

Ive heard this bracket can be bent to eliminate this situation. Is this true?
Otherwise; anybody have any ideas on how to fix this?

Thanks