How to compute optimal stem width values for Type1 and PS flavored OTF?

Well, since Adobe has provided its autohinting program along with the AFDKO, it is very easy to create the hints in PostScript fonts. And these autogenerated hints are very good. But how to find the optimal font global stem width values? The values, that FontLab autogenerates are not bad, but they are not optimal in the very most cases. You can see that, if you replace the original values in Adobe fonts with values, that are autogenerated by FontLab. There is a tool setsnap.pl, with the help of which you can collect values, that were computed with the tool stemHist.cmd, but I was not able to reproduce the same values, that Adobe has computed for its fonts. Both tools belong to the AFDKO. (In my opinion Adobe fonts belong to the best hinted PS fonts on the market.)

I have two questions now:

1. I miss the hinting tutorial by David Lemon. It was stored on the FontLab website, as far as I remember. Where is it? It is very good, although there are a few bugs in it. And unfortunately David does not provide a real solution for computing the stem width values. What he provides is a try-and-error-solution. But I can hardly believe, that Adobe still follows this try-and-error strategy.

2. If Adobe uses setsnap.pl (programmed by Kai Lunde, as far as I remember), I would like to know, with which parameters Adobe starts setsnap.pl. Or more generally, how does Adobe compute the stem width values? Under which criteria does Adobe limit the number of the values? Et cetera.