Good question!
I was meaning on including that, but forgot to add it although it should be buried in a previous page of the build.
Titebond3 and it should have been a liberal amount, but maybe not...
Should be fun trying to re-glue it and get it properly sealed again.
May have to beef it up some more to make sure it doesn't happen again.
Fiberglass! I used a lot of glue, calk and used heavy grade fiberglass inside my whole box. Seems to be holding up very well for now haha.