Make sure you select the correct paper size, that is the most common mistake we find when using PDF files.
(you; select; the correct paper size, that is the most common mistake) (the correct paper size; is; the most common mistake we find) (the most common mistake; find; T:when using PDF files)
you the correct paper size the most common mistake
select is find
the correct paper size, that is the most common mistake
the most common mistake we find
T:when using PDF files