Hi, I am not trying to print, i just want a managable size to my pitch deck. @ 25 x 15 its huge, and i wanted to shrink down to something I can email to people and actually let them print to 8.5 x 11 if they want to. So your way only will work for printing it, not for saving it. Acrobat won't Save as a PDF if its a PDF.
I saw on the Adobe Acrobat forum for creating PDFs someone said to open in Preview, then Print. I selected horizontal view and Scale & it was already set for that for US Letter. If you adjust Paper size, it will give you the exact scale for your intended page size.
Then I clicked the PDF drop down in lower left, and chose Save As PDF and it created a new 11x8.5 document that has not visible loss of clarity. Problem solved with Preview!!!
Regarding your other way, I don't want to change the document size.