i dunno if this is the right place feel free to move this if needs be

i have a problem with the output jack on my Peavey Predator EXP Plus, now its not the jack itself that moves around, it works just fine, its the little mounting plate its attached to, the screws that keep it in place wont stay in the guitar and keep coming loose and falling out and im not sure how to fix it...what do?

Thanks in advance