The question I have is where the rounding happened. My assumption is it was in the dialog where you adjust the active sizes. I can take a look there and see if I can reproduce this.
Well, there's two parts: First, how did we end up with two not-quite-perfect sizes, and Second, why didn't the gerber output them as a single size, since it rounds the sizes anyway.
btw, I noticed that we seem to be missing the
M48 INCH,TZ
that we used to have at the top of the excellon drill file.
-Dan