I can help you with the 560 Ti's as I have two too! Use Cuda-Miner for them as it is miles better than ANY other miner for Nvidia cards. I can give you my config to get the max.
cudaminer.exe -m 1 -H 1 -i 1 -d 0 -l K16x8 -C 0 -o Pool:Port -O WorkerName:Password
I made two batch files, one for each graphics card and have two separate workers for each graphics card. Change the value after d for the device number. Device 0 is the main GPU and 1 is secondary. Also if they are in SLI make sure that is off as it can mess it up.