I have a playability issue with my bass involving the fingerboard. The string height of the D and A strings is too high. (Notice I didn't say 'action'.) Unstrung, the scoop in the (bevelled) board runs about .4 mm (measured with a digital vernier and a precision straightedge). Strung to pitch, the scoop runs about 2 mm. The radius is pretty consistent at 90(!) mm, far flatter than the 66 mm or 70 mm prescribed by Bob Branstetter and Bob Ross respectively. The top of my bridge was recently reshaped by a pro to roughly 75 mm radius. Also, the board's getting thin- overall thickness at the neck root overhang is 18.5 mm, along the edges it runs 6.6 to 7.8 mm thick where it's glued to the neck. Finally, to my questions: -Is an increase in scoop when tuned to pitch common, or is my neck getting flexy because the fingerboard's too thin? -Is the board already too thin at the edges to plane it to decrease the radius, thereby moving the centre of the board closer to the D and A strings?