I'm taking 05 truck into dealer tomorrow. After reading the forum appears most users replaced factory radio. I have the 6cd changer and don't want to change it. Just want the FM radio to improve. Does anyone know if it is the antenna, wiring, or radio itself? I'll post what the dealer tell me, but my guess is nothing. My 1998 Ford Ranger radio was fine. Dealer said nothing was wrong. Does anyone know how I can contact factory?