I picked up a 6 pin schlage lock from the local home recycling place. i tried to pick it without success and didnt have a key, so I used a shim from the back to get it open so I could take it apart.
I was expecting spool pins or other dastardly tricks but it was just a standard pinned lock. In fact the key biting was pretty flat. Turns out that I had put in a mortice shell for convenience and had it so tight I couldnt tell I'd picked it.
Lesson learned: need to have faith in my skills and not assume it's me, or that the lock is necessarily difficult. Sometimes it's just stiff. I re-pinned it to 4 pins and can pick it all day.
Just thought I'd share my mistakes in case they might help others.
Glen