Thanks, Dennis...

I add that the overexposed area is whitish in color (on the print) on some, but orange-ish and purple-ish on two others (again, on the print).

I will check the negs again, but I think the discoloration is contained within the frames. Likewise, the discoloration does seem to appear in the same general area, but seems to cover a wider area in some cases.

Also, if it is not clear above, I note that I see this only in two or three frames per roll, and a few rolls have come back without any issues.