How about hinge repair?

I have two first-generation TRIC cases, and both of are suffering various degrees of hinge failure. It seems the hinges are only held in place by glue, and that wasn't enough to hold on to the half-inch of hinge that fits into the slot. The cases aren't useless. They stay shut with the clasps, and still protect the guitars from bumps and aridity, but traveling with them I'd need to add a strap around the whole case. 

I'm getting two new ones with the fabric shell that ought to hold the hinges together better. But has anyone successfully repaired this common flaw? I used Shoe Goo as glue, and that didn't work for long.