Your first posting and been frustraed about picking Master 40, ofcourse you will be frustrated
it takes time to feel,when the pins set
first you must learn about securiy pins,how they work
and one thing you must learn is NOT TO GET FRUSTRATED because once you get frustrated
you won't be able to pick any lock
you must learn that,it will take some times just practice and practice and practice
it will come to you,there is some good info here about locks ok
i hope this helps.
http://cdn.makezine.com/make/lsiguide.pdf