I think we more or less sorted it out, but to summarize:
Is sleet counted as snow for snowfall totals, and at a 1 to 1 ratio? E.g., 3" of snow followed by 0.5" of sleet would be 3.5" of snow (especially if measured separately, as opposed to snow depth).
What is the LE ratio for sleet, about 3:1? Newman seems to have it nailed down at around 3.5:1.
There are the model output (snowfall map) issues where sleet may be added to total snowfall as if it was snow at a 10:1 ratio, but I think that can be sorted out by looking at soundings, upper air temps, qpf, snow depth maps, etc.
Thanks in advance Ray!