I have a very strange problem. My '79 300D gets water in the right side of the trunk and on the right passenger floor after a rain. It doesn't have to be a heavy rain either. I have a sun roof, but it is dry and appears intact. I have absolutely no indication of a water leak or stains anywhere visable inside the cabin or trunk. It's almost like it is coming up from somewhere. Has anyone had this problem?
P.S. I tried to duplicate the leak with a spray from a hose, and even a car wash, but I got negative results.