G10 is not a satellite I have much success with here in California on my 6 footer because of the closeness of the other birds. IA13 is my best in the West. G10 and IA7 being the worst.
Make sure you have the LO frequency set correctly-it should be 5150 for C Band. I might try to hit G16 (G4) first as it is pretty easy to find. Also, if you can get a hold of an old analog receiver it will help as they are easy to aim.