Cutting off bottom of letters in bottom line

I have a Kobo Glo which frequently cuts off the bottoms of some characters on the last line on a "page". Although normally it's only a portion of the below the line letters (so that yet looks like vet, etc), I have seen at least one instance where it essentially cut off at about the halfway point on the line, so that half of each character was on the bottom of one page and half on the top of the next page. Needless to say, it wasn't easy to read either line. Any ideas on how I can remedy this? I can change line spacing, etc, but obviously that might mean only that it affects a different line in the text on each page.

I haven't seen where Kobo allows you to set the bottom margin, which might take care of the problem. It's not usually a major problem, but obviously is an annoyance as I shouldn't have to guess the words on the bottom line.

Thanks in advance for any recommendations.

SteveK