I've attatched things to models before using hot wax (well, warm but soft wax)
melt some, wait for it to start solidifying, then take it a roll it around till it's about the consistency of really soft dough. place it on the back of the stowage, then press the stowage onto the hull. make sure you eliminate all airbubbles, as they'll cause the wax to crack.
By the way, if you chose to do this, be wary as it is EXTREMELY fragile.