Ok, since it has been 3 days and no one has answered you, I am going to share a secret: http://mmm-yoso.typepad.com/mmmyoso/
Mmm- yoso is the best guide to food off the beaten path in San Diego. Just search “hot and sour soup” and you will get several suggestions. This guys is amazing – I have tried at least 10 of the places he recommends and I have never been disappointed!