Can I customize controls of PDF Viewer?

I have a number of requests to implement the option to place PDFs for viewing on our Press line HMIs. The problem I am having is that the native controls of the PDF Viewer are much to small for optimal use with our ELO touch screens. It works, but the amount of tenacity needed to scroll and change pages…etc. makes the user experience very frustrating. I was unable to find a way to script some bigger controls. Am I missing something?

Nevermind saw that If we upgrade to 7.8 I can hide the native controls and script my own and make them as big as my hand if I want.