In addition to my initial calculation (7+3=10mm), and two corroborating calculations, I also gave lots of examples to illustrate my point: Reach is not interdependent of Stack, and so Stack must be accounted for (which was the "7" part). I can't make it any clearer.
Meanwhile, you keep talking "around" the issue, and making odd statements (are you using a language converter, or is English your second language?- no offense), which suggests you still don't understand. If you do understand, please provide an example of what you mean by comparing Reach "directly." Above you said 386-383=3mm (well, actually you said it was 5mm before I corrected your subtraction effort). Is this the entirety of your analysis?