I have had my unit for a week now and I noticed that while listening to the xm satellite radio and I wish to change the station by using the double arrow buttons (<< or >>) the unit instead of moving to the next channel, the screen shows a zero where the station number was and goes back to the station it was on. It did not do this when I first got the unit but it is doing it now. I realize I can change channels by going to the directory button and inserting the station number manually but it is a pain to do it that way.

I was looking through the settings at one point with no intention of changing anything. If I changed something I do not know what. Does anyone have suggestions on what setting I might have changed if any?

Thanking you in advance