I have a non amplified audio formz roof and love it. I added a Fosgate 400watt amp today and it sounds GREAT!!! Only issue is now I don't have any FM signal reception. I use Bluetooth streaming often but would like to still use FM. I have tried 2 different antennas and the only way they work is when I pull the head unit out and hold the antenna in my hand or near the middle of the ranger. Once I shove it back in the roof cavity it barely gets 1 station. I live in Dallas, TX and have very strong signals. Any ideas???