Interesting. I think I had that gap too…I just used a fillet to help fill it (ha).
HOWEVER. Now I have a bigger issue late in the build. My galley hatch has a 1/4 gap from the hatch edge to the shell on the sides. I don’t have it all together yet, but his is going to be a major water issue I assume. No clue how to fix it….the ideas I have seen here (latches) all take away from the look of the trailer or I am not sure they will work.
So….do whatever you can to fix this now, try not to let the body expand outwards from the galley….which I think is where my other problems started.
Good luck!