It seems like my radio reception (at least FM, haven't really tried AM) is worse than stock when using my Rockford 9110G. The stock antenna amplifier is working, but the signals are just weaker overall, which seems to be the case for many of you out there using an aftermarket unit. I am considering getting an amplified antenna amplifier. Has that helped for those who have tried it? Also, should I not power up the stock antenna amplifier in this case, or should I double up the amplification? Thanks.