On the View -- View side by side option
Make the Synchronous Scrolling an OPTION instead of a Default setting. I rarely use it in synchronous mode. Moreover, If I'm comparing a short file to a large file, it will take me to the end of both wasting extra time in trying to get back to where I was when I hit View side by side. It would also be nice if excel didn't try to determine where you are in a file to view. It should bring up both at the point you had them.