You need to lift the binding pin, not just any one you like.
The pins will bind in a particular order based on the manufacturing tolerances of the lock... you need to feel for the pin which gives resistance as you push against it, then raise it slowly till it clicks into place at the shear line. If you can't feel any binding at all, you need more tension - and if you find it hard to raise the pins when they bind, you're using far too much. Find a happy medium that's comfortable and easy to work with, but aim to use the lowest amount possible since this will decrease the chances of oversetting pins.
This is all easier said than done though, it requires a looooooot of practice. Stick at it though and you'll be popping locks in no time!
