Ok and alright now, we all know that in order to get the best playability without excessive string buzz, the fingerboard should be concave in its shape between the nut and the bridge end of the fingerboard. (I know some folks don't subscribe to this. If you don't, read here: http://www.davidgage.com/z_david_neck.htm). That being said, when you apply a precision straight edge to the board; 1) How much gap is there at the maximum point of relief, .015", .025", .030"? 2) Where on the board is the maximum relief, dead in the middle, closer to the nut, or closer to the bridge end of the board? Just some things I'm considering since I just replaced the neck and fingerboard on my '52 Kay M-1. Seems I need a little relief in the board. It takes moderately high action to eliminate 100% of the string buzz.