So currently I have installed a Kenwood KDC-HD455U Head Unit and I have 2 questions. 1. The stereo has hd radio but there are some stations that I don't even get a signal with and other stations that fade in and out and get quieter out of no where. Any idea what kind of problem this might be? and 2. I am looking to replace all 4 factory speakers and was wondering if I should get all 2-way speakers or all 3-ways or a mixture of both. Any suggestions for speakers would be greatly appreciated. Thanks!