I bought a really cheap door lock and a brass padlock. Turns out they are both 5 pin. Well I spent about an hour with the padlock and didn't get anywhere.
So with the help of my pliers/channel locks/various screwdrivers I disassembled the door lock so I could get down to just the lock. Then I took that apart, removed the pins and re-pinned with just 1 pin in the lock.
Of course I was able to get this, but I was VERY surprised at the amount of tension that was needed - next to nothing. If I put anymore on it I couldn't get it! Very enlightening exercise and I'm going to re-pin tonight with 2 pins and try to get the feel for it a bit better.
Tough first day - but hey, everybody's gotta start somewhere right??
