Last fall I noticed that one latch on our rear bunk was pulling away from the wall a little. We took it back to the dealer for a few minor issues, and this was the only one that really concerned me. They took the latch off and re-mounted it. I didn't get a chance to ask the tech what exactly he did to it, but it is in the same spot, but had fresh Dicor sealant anround it. My guess is they used longer screws and/or shifted the location slightly and drilled new holes. Seems solid, but I will keep a very close eye on it to see if holds. I figure the good part is they now have a paper trail that this was an issue. The repair tech said it was no big issue to fix when I showed it to him, but I never saw after he fixed it to get the details.
I know having the nuts exposed on the inside isn't ideal, but it would be a solid fix. I'm not sure what other options there are. There is only so much solid material in the wall for them to anchor to. Maybe they can take a shot at re-attaching the latches with the lag screws before going the carriage bolt route.
2005 F-150 FX4
2013 Rockwood Roo 23 IKSS