hello i have a small problem.... i bought a brand new master #3 about 30 min ago, opened it with key "worked fine", then i took the 2nd key and filed it into a bumpkey. tested it on the lock and it worked great.. did it about 3 times with no problems, about 10 min after that i tried it again with the original key and it wouldn't open! then tried the bump again NOGO!
any ideas?