Alterations to configuration.scad in SAE section do not seem to alter the Calibration part

[Spacexula]

vars=[
//[m8_dia, m8_nut, m4_dia, m4_nut, m3_dia, m3_nut, bush_dia, mot_shaft, bush_rod, bush_outerdia, bush_length]
[8.4,2,5,9,4.4,7,11,5.3,8,16,11],//metric
[9,16.4,5.5,11,5.5,10,11.5,5.3,7.9375,16,11]//SAE
];

Alterations to the 2nd number in the SAE space (16.4 here) does not change the size of the nut hole. Also if you look if both of these setting work the same wouldn't the nut diameter of the metric 8mm be 2mm?