Does the lock you are trying to bump have a small hole to the left of the keyway? If it does it is not an old Kwikset, it is a newer Kwikset Smart Key which cannot be bumped.
http://www.kwikset.com/smartsecurity/re ... ology.aspxKwikset used to be the joke of the lock picking community, but they stepped up their game with their new lock, it is both difficult to bump and difficult to pick compared to an original Kwikset from 10 years ago. Sure the bump suppliers still sell a SC1 Schlage, a KW1 Kwikset, and a
M1 Master, but that doesnt mean the keys will work to bump all locks open, and they are also not magical, it takes a good amount of practice and timing when bumping a lock. What are you using for a bump hammer? Are you just holding the key when about to hit it, or are you holding it and applying some rotation? If this is for your business, its honestly not worth you taking the time to learn party tricks, time is money.
keep a local mobile locksmith's business card handy,
Squelchtone