Hello, I want to keep my factory radio/receiver in my 1999 Ford Escort Wagon. I replaced my rear speakers with Kicker DS68 6x8s. I had to angle the screws in but the speakers eventually fit. Now my new rear speakers sound worse than the stock speakers. Any advice? They sound somewhat distorted at moderately higher volumes and don't have as much bass as the stock 5x7s did. Is this an impedance thing? these speakers are 4 ohms and I can't find out what the stock receiver specs are. The speakers are 6-35 Watts RMS and 140 peak. But still can't find any stock receiver specs info anywhere. Is this a Wire thing? the rear speaker wires are really thin about 24 guage. the new speaker manual says it is recommended to use 16 guage or higher. Any thoughts?