While I'm trying to finish my CT I notice a small amount of water everytime it rains in the drivers side front corner. The corners are not covered yet so I figure I will find the leak before I cover it up. I tried all the seams and all the srew head with water being sprayed starting at the lowest point and working up to the roof. Nothing! Then the "light bulb" went off - Marker light. I think I may have seen that on this site at sometime. sprayed a little water and my daughter, inside the unit, yells "yep, there it is". A little caulk and I should be dry. So. . . . when looking for a leak check the marker lights first!
Dan