Appreciate the info John.
Believe it or not, I have tried Windows 7, 8, 8.1 with the 980Ti's with the same result....can load only 353.06 drivers, and with Windows 10 Pro Insider Build 10130 even though there's No actual Windows 10 GeForce Drivers available yet for the 980Ti's, I tried loading Windows 353.06 8.1 x64 drivers that would install, But upon reboot the Device Manager states it couldn't load them!
What's funny is that on my other EVGA System I have running Windows 10 Pro Insider Build 10130 using the 344.38 drivers (Recommended by GeForce as the Best driver) with two GTX 680 Classifieds in 2-Way SLI, The System works Great, except for the fact I can't install the 353.06 drivers on the 680's!
Some how Nvidia has made us use ONLY the 353.06 driver that they designed for the 980Ti and I can't say anything else about what I think without getting a Foul Language Warning!