Is it possible your leak isn't coming in around the door, but maybe further up?
Have you checked the chalk around lights, windows, or any opening in the wall of your unit above the pass thru doors in question? If you haven't already done it, check the roof also.
Water intrusion is sometimes very difficult to track down. It sometimes has a way of traveling from the source to odd areas it seems.
2008 Cruiser CF26RK
2013 Ford Eco-Boost
Heavy duty payload - Max tow