I just got a brand new, out of the box Fender Jazz 24 (quilt top, made in Korea) and the setup was a mess. There's practically no action in the thing. The saddles are about where they should be. I gave it a couple small turns (counter clockwise) on the truss nut but didn't see an improvement. I don't want to do too much. Should I just wait and do a little by little? How long will it take to be playable?