@JTT,
I have made a few enquiries of people I know who know stuff.
We opine that may and might are the same.
You cannot slip a cigarette paper between them.
One may be heard more often in certain situations, the other might be heard in others.
But they are the same, for all practical purposes, except maybe for academic papers from researchers who have nothing better to do than to dream up linguistic complications for others.
Minuscule, by the way, is spelled like that.