As I posted elsewhere I had great fun over Easter picking up my new Plus 4 and driving it back to Munich. But I had exactly the same problem with water dripping from the bar next to the fuse box - meaning that I had to drive with one hand on the wheel and the other holding a towel under the dash. The view from the garage here was "you've got a real Morgan", and I understand that such leaks are notoriously difficult to find.