Thanks for reporting back Gregg. Let me ask, is that skinny coax a single wire or does it carry all three ports? Another way to ask is are there 3 skinny coaxes?Just to wrap this thread up and maybe help the next guy, turns out my issue was the "skinny coax" from the LNB to the base turret of the Winegard Travler - the line that went to Port B was grounded out. The LNB was fine, although I now have a spare just in case. Thanks again to all of you for the help!