Architectural drawing dimension precision

[morrisrw]

Recently when redrawing a small component, I needed to display dimension units in architectural form down to 1/32nd and 1/64th inch. I could not get the dimension to show less than 1/16th inch. I could move the dimension lines in 1/32 and 1/64 inch increments but the dimension would not display that precision. However, if I set the dimension to display to four decimal places, it would do that. BTW, when I set the precision to 0.000000 it would not display dimension at all!

Any ideas on how to get the dimension shape from the stencil to show down to 1/64th inch without resorting to decimal display??