I have never adjusted a truss rod, My new R9 plays great, has great action and no intonation problems. Recently with a change of weather here on the southeastern coast this guitar has picked up a string/fret buzz at the top E A & D string around the top three frets / nut and when played open. when i apply a small amount of pressure, pushing the neck up, the buzz stops. Is this a simple truss rod adjustment I can do myself or is this a bigger issue and I should take it to my tech? any advice and help would be great, how to? would you?