its pretty simple.i live in calif too in napa. just go to the places were they havent/wont update there gear.places that do not need a dyno reading to pass.
stay away from express smog.they tried to fail me because of my gas cap. any ways there not to hard to spot.just ask to see the test spot and look for the rollers.if they dont have em your good to go.i know your asking how to fix it but this is another solution for you.