Baldwin front door lock quit working. I never use the front door, but my Brother came up to borrow a tool (he lives three doors down from me) and told me that my front door lock was kaput.
Tried to take it apart myself and realized I was getting into unexplored territory. Called the local locksmith, and he said he could be there in about 20 minutes (nice service). Glad I didn't take it apart, myself. Springs and ball bearings everywhere! Broken spring and a really tiny "c" clip. Lubed, adjusted and he thinks good for another 20 years. $85 plus $15 tip to the guy and I'm happy.