Thank you to all.
Yes, I tried reading charts from a PC about 7 years ago on an i1Isis-1 and they failed. But, I seem to recall that they printed at roughly 95 - 96% of the actual size. This is the first time I've read that they were OVER-sized. One way to the other, the charts will be printed by a person who is far enough away that I'd rather they be correct. If I were printing them, I certainly would simply measure and adjust. But, in this case, I can't do that.
I will try the Dry Creek Photo utility.
Thanks again to all,
Mick