Okaaay, this may sound noobish but I don't care, I just need to get this right. To straighten the neck on a J bass, I would have to turn clockwise, am I right? If I start hearing cracking sounds, should I keep turning, and when do I know the neck is straight enough. I tried to set up mine and I am still not happy. The action is still high and yet the saddles are pretty low. Obviously the neck is not set right. The Sadowski PDF says that he is looking for a neck that is straight, with just a little bit of curvature. I suppose he knows and he has the science in him, but for me it is everything but scientific. What do I need to look for and how to measure this slight amount of curvature? Thanks!