bottom of pdfs cut off

Hi.
I am very new to Scrivener but am loving it. I just imported a pdf into the research section but the bottom few inches of each page of the pdf is cut off. I’m guessing there’s some straightforward reason for this but I’ve checked Page Setup (under File) and several options under View and can’t fix this. I’ve double-checked my original pdf and the bottom is not cut off on this. It looks like this is just happening when I pull it into Scrivener.

Can anyone advise me?

Thanks!
E