Thank you Donna. So you are saying the -2" instruction I received IS wrong and for this piece it should only be -1". That's what I worried about. Now I wonder how wrong all the other pieces will be if I make them 2" smaller too.
Last night I used Excel and using the finished widths as my starting point figured that all pieces should be a certain percentage smaller, if they were to stay in proportion to the width. I got some fractions of course so it's not the best method. But some of the smaller pieces certainly did not come out anywhere near 2" smaller. And the width at the bottom of the mini and the regular is the same, throwing my whole idea off.