OK I just got a Sentry 14 gun safe that weighs 475lbs and I want some opinions on moving it. First of all its going up stairs. The stairs its going up(about 12 of them) are concrete so Im not worried about them being able to handle it. What I am wondering is should 3 people with a nice strong dolly be able to handle this? Hopefully the door will come off the safe, Anyone know about Sentry safes? Any opinions or thoughts are welcome. Thanks!