Re-keying door locks?

[desinor at sympatico.ca (Jean-Claude Desinor)]

   Interesting ...
   I had all my doors "retumblered" to match the new ignition key I had 
installed a few months earlier.
   Now I can use the master key on any lock but the locking gas tank. 
That one apparently is too difficult to do.
	Jean-Claude

Foxx (in a box) a ?crit :
>   there are two options if you want to rekey a lock to the door. if you 
> happen to know the four digit code to your key, i have a book that 
> breaks down the code to know what tumblers you need. if you don't have 
> the code, then it's simply a matter of matching the tumblers to your 
> key. the process is not difficult at all and you could save yourself a 
> bundle by doing it yourself. plus by replacing your tumblers with the 
> correct one instead of filing them down your are keeping your car more 
> secure from break in. if you need specifics on this or that, let me 
> know. i have god knows how many tumblers, door locks, etc. that i spent 
> a whole day cleaning not long ago.
>