i'm tring to get the network channels on galaxy 16. on Freq 3845 i have no qualty but 83% signal. on 3915 i have RFD TV with good signal and qualty all together i have 22 channels. i have a viewsat pvr 7000 DMX741 LNBF and a unimesh 10' dish. is this just a fine tunning issuse?????? Thanks