Which channels are you missing? As far as I am aware all regular programing should be the same on both eastern and western arcs. Another question. What are the signal strengths? The domes don't get as good strength as a regular dish but it should still be at least 40-50. Low signal strength may cause some channels to not come in. If the strength is low I'd start checking the fittings. Most people who work at RV dealerships don't seem to know how to install fittings correctly and a fitting with a recessed dialectic can cost you 5-7 points apiece.