My 9C1 seems to have a problem picking up slightly weak (and sometimes even strong) radio channels. This problem has existed since I purchased the car over a year ago and does this regardless of what head unit is in the car (stock or Pioneer DEHP7400). It's really starting to get annoying ... the weirdest thing is that when I put my hand close to the head unit or if another car parks close to mine, some of the weaker channels come through much clearer. On a side note, my antenna plug (the one that connects to the back of the head unit) seems to have trouble keeping the male prong "centered" in the female end on the head unit ... could this be the culprit? Thanks.