Hi. We have a 5th wheel parked at a local lake. We have about 8 other close friends that have campers there as well. Our problem is that someone is in our camper when we aren't there. We have since found that there are only about 5 camper keys made. Is there a lock out there that we can change to that is not mass produced for an RV? We don't want to raise a big stink about it...just politely lock them out...lol. Any info is appreciated. Thanks.