@o_lampe no, but the numbers are there, and the crap machine has about half the deviation.
@T3P3Tony is mounted on 20x20 aluminum extrusion.
@mrehorstdmd I'll post those up when I get a chance.
@Tinchus see, that's exactly opposite of what two resellers have told me so far. Both of them have said that there's no tolerance for straightness on the rail, and that it's meant to conform to the reference surface. I know that's bullshit, because there HAS to be a manufacturing tolerance, even if it is just a general tolerance. So short of getting something specifically machined, it seems that I'm SOL.