re: pdfs, tech advice request?
I found the answer!
This program k2pdfopt: https://www.willus.com/k2pdfopt/
Allows you to do all sorts of transformations to pdf files.
The settings I used were:
Mode: Crop
And then I selected a cropbox that cut out the margins.
I might also try one of the other modes, which actually re-arranges the file to make it fit on smaller screens, but this is good for now.