I follow a internet guide to setup my bass and my bass started buzzing at some frets !! http://www.weedhopper.org/Bass_Guitar_Setup.asp I tried to follow other guides on the internet but I don't understand the articles. Here are my questions : 1.) How to adjust the truss rod? 2.) What should be the action for EACH string? My aerodyne bass is a 20 frets bass and I normally play with a pick.... I want my bass to be low action so that i can play fast. I hope you guys can provide me with clear information.