I use ctrl = scroll wheel to scroll and space bar to pan. when i am finished i would like a shortcut...(like ctrl+shft=W) to leave the pdf at the whole page view. I need to be able to review large design plans, markup, and navigate quickly. I can't do this anymore. It use to be so clean and precise. Now its bloated and balooning like a cartoon, and does not seem to function well. If anyone has any secret tips to navigate large pdfs lightning quick while making edits, please let me know.