All your settings seem right.
Depending upon where you are, the 30" dish should be fine. I'm using a 20" x 30" ChannelMaster, and I swung it over to G3C last night and am having no problems getting CCTV. My LO and channel settings are the same as yours.
Of course, make sure your LNB setting is correct for the type of LNB you are using.
I'm guessing you are having an issue with
aiming.