First thing first here, don't refer to Foam Bond as Lepage's glue or whatever, because it is NOT Lepages or anybody else's, just because you think it is doesn't make it so. You have failed miserably because you didn't actually use Foam Bond, or if you did you didn't follow the instructions. If you ordered it from NWHT then it's Foam Bond, and if you followed the instructions then it worked, period. If you waited overnight, then you did it WRONG and didn't follow the instructions. If you tried to put them together wet, then you did it WRONG and you didn't follow the instructions. There's an entire section of the website dedicated to the proper use of Foam Bond. If one pays attention to those, then it's pretty hard to mess up, and IMPOSSIBLE to pull it apart.
Jimbo