TV picture shakes/jitters/wobbles when using Nvidia 9600GT

Seems to result from the driver defaulting to 50Hz. Hopefully fixed by making the following changes to xorg.conf:

Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 9600 GT"
Option "FlatPanelProperties" "Scaling = Native"
Option "SecondMonitorVertRefresh" "60i"
EndSection


Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "1"
Option "metamodes" "DFP-0: nvidia-auto-select +0+0, DFP-1: 1920x1080_60i +1680+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection

References:
http://http.download.nvidia.com/XFree86/Linux-x86/1.0-8774/README/appendix-d.html