Preface: basically my goal is to fine tune my setup. I don't use standard tunings and string gauges, so there really has to be a method to finding the best setup for each instrument/player. Assuming- 1. The neck doesn't have a back bow since I cannot think of any circumstance when that would be desirable 2. The bass is played with somewhat consistent technique 3. Nut, saddle height and frets are all ballpark where they should be. I've heard/read "set the relief to the thickness of a business card" or "0.XXX inches" over and over, but there has to be a better way to figure out what relief you should have based on your specific instrument and your playing style. I've been searching for the answer for a while now, I have yet to find anyone go into any depth on the subject. So I've been doing some thinking and thought I'd ask y'all if this sounds like I'm on the right track. If you have too little relief, I would think you would get string buzz in the lower half of the neck, most likely increasing as you move lower, until the first fret. If you have too much relief, I'd think you'd get buzzing starting from the most concave point in the neck (somewhere around the middle of the neck) and up. Thoughts?