No one can do it perfectly, it's bullshit that it works all the time, because it doesn't.
You're better off cashing normal dumps without pin.
And it's not hard either, just get original T1 tracks, call bank with info from person and a bit of social engineering and if they believe you, they will unlock the dump.
This is also too much work for nothing as sometimes you will go on talking for an hour just to be able to make a 2k strike. Where if you didnt call, you probly could've striked more shops and made more money anyways.