The software update would be a good start for 3D
Yesterday, I read on the AVS Forum of an updated software version download upgrade that is said to help the 3D picture, Version 2.712. Your Panny needs to be connected to the internet in order to recieve the 10 minute download. Go to Menu/Network/Software update to get this latest version that is said to help 3D picture issues.
I've been so taken back from these CNET Cinema picture settings and D-Nice's Custom picture settings that I haven't even gotten around to 3D but I did take the 10 minutes to get the 2.712 Version and I think I'll routinely check the Menu/Network/Software update each week, so to make sure I'm not missing out on the latest Panny software version updates. It's the smart thing to do for your Panny.