I found what I thought might be a typo, and had it verified by PE.
Figure 90, the calculation for pksp should be the sum of the three terms. A product (*) is shown before the (clpksp * cl) term.
The corrected formula is:
pksp = (brpksp * br) + (iopksp * io) + (clpksp * cl)
With that correction in place, I expect to see epitaxial crystals from everyone at the start of the next class