Sense of Adventure

You have to possess a certain sense of trying the unknown to enjoy picking locks.
If you fear changing status quo you will probably not enjoy locks. They are puzzles to be beaten.

A spring will drop into the core and get lodged.
You'll shave metal off key pins and open the core beyond factory specifications.

Sparrows makes a lock they call the Revolver. It has four bibles surrounding the core. It also has a bad habit of dropping pins and springs into the channel at the bottom of the core as it rotates.

Within a couple of hours I had dropped a spring into the core.
I took the hex screws out to find the broken spring.

When I opened the second stack I got three pins and half a spring, where each stack should only given me one key pin, one driver pin and the spring.

Fine...I took all the hex screws out and dumped the entire thing into a tupperware tub.
Then I wrote to Sparrows asking for directions to reassemble the lock.

A couple of emails later I was back in business.

If you pick one particular lock repeatedly you will come to a day when it is harder to turn the key. You'll have to disassemble the lock, replace the faulty part, be it pin or spring and then reassemble it.

You may have to take the lock apart from the rear if there is no access from the top of the bible like a practice lock would have.
You'll need a cap removal tool and a plug follower that fits.

And a healthy sense of adventure.