Yeah, I have a panny-6. I have the 50" version, though the DVI board is exactly the same, and mine certainly has the "broken" settings.
All I did with powerstrip was use the default settings for the closest "custom" resolution powerstrip had, and then tweaked the timing slightly to make it sync.
I find the easiest way to configure it was to use VNC to allow my laptop to control the HTPC "blind".