South Korea PCC

Does anybody here have experience with getting a South Korea PCC (particularly, from the SF bay area)? says you can request the PCC from a consulate, but various forums online mention that the PCC they give you is incomplete and doesn’t contain investigations and lapsed records.

The only other option is to send some paperwork to someone in Korea who can go to a police station on your behalf, or use a service like this to do this for you. Does anybody have any experience or recommendations?