adjusting it at the bridge or the truss rod? i just got an ibanez sr490 and i wanted to adjust the action. i want it as low as possible without any fret buzz. i'm having peticular buzzing problems on the 7th fret of the A string. so is it better to adjust it at the bridge or truss rod? the neck already has a slight bow so i think that's the way it should be but i don't know. should i take it to a shop to get setup?