We have 4 of these locks in our apartment building. They all have 5 pin(?) locks (shorter key) right now and our main common area key is 6 pins (longer key). Is it possible to replace the 5 pin cylinder currently inside with one that has 6 pins and will work with our master common area key?
Not sure if pins are the correct word but the 6 pin key seems to be about 3/16th of an inch longer.