You need to e-mail Cary. He will send you a sheet describing how to do a field repair.
In the U channel atop the galley bulkhead, there is supposed to be a dam of silicone a few inches from each end. Once that cured, the next step was to fill between the dam and the outer wall. The latter...
Is the leak in back of gallerya? If so then yes the fix is to drill hole and introduce caulk. Then add foil tape to the joint. The bottom galley storage area is a different fix.
Some people mention to make sure gallery door is even on both sides.
Someone on the forum modified a clam shell pop up. They added another zipper so on side was over galleywe and other enterance was opposite. Was great idea.