I am a bit confused. All of my basses and most guitars i have ever owned have a vey slight bow or curve in the neck towards the head stock...Relief as they call it. I set up my own basses.. lower strings or raise and adjust the truss rods so i have no buzz but low action. I talked to a guy who owns a shop here and he said there should never be any bow in a neck they should be straight. I have never had a neck stright that did not buzz.I thought some relief bow was normal....am i right or have i been wrong all along. My basses play well at a low action and never a buzz.