I recently acquired a bass owned by Jacochops (Matt P) and I loved the setup he did on it. The neck relief seemed dead straight and the playability was off the heezy. I showed it to a friend who has done setups for me in the past... his observation: "it actually has a little backbow". OK, fine. It feels great! I tried to set up my Smith with extra low relief, and got it where it seemed to be flat. The playability is similarly great. Again, my friend's observation is "a little backbow." I guess I'm blind...I have a hard time seeing it. So, will playing with this minute backbow screw prompt some weird fretwear or anything? Does anybody else enjoy a slightly inverted neck relief?