Just get a bigger grub screw and a drill tap to rethread. Sometimes you can just screw the bigger one right in. I usually have to do it on all my old boards.Guessing you began as Everysurfer........
I'd be willing to bet a lot of shops don't even know they are getting boards in with the knock off boxes in them. The more you know. There is also no shortage of knock off Futures Boxes I see as well but because Futures doesn't use a mechanical locking mechanism the users would never know the difference beyond perhaps an occasional stripped set screw.