Gettysburg C-Max

sorry new to this, can you give me some more direction on this

I have had a problem with something making clucking sounds when it is wet outside. Turning or over bumby roads. Luckly, the dealer has heard it also but the cant seem to fix it. They want the car for a extended period when it is wet out. Anyone eles having this problem? Got this car (2015 SE) at the end of June and has 6000 miles on it. It started the frist time it rained.