Not long after I posted this I realized I did not need snat on that 10.1.1.170 virtual and have turned that off. We will be testing again later.
If we turn off one of the servers in that pair the initial page loads correctly, but if we dont it loads correctly some of the time 1 in 3 maybe.
It seems like some of the requests for the page load are being sent to more than just a single server int he pair and all of them for any single page request.
So by not work I mean that sometimes the menu of tabs across the top of the page will not load correctly. I am not the application person so I only have a vague grasp of what it is really doing.