Plugs and resistors have been changed, new O2 sensor, fuel filter, Both coils ohm the same, EHA amp draw ok, temp sensor OHM ok, no codes showing, and still runs rough. Even runs rough at 2500 rpms. Duty cycle at 85% after warmup. Plan to check dist. caps in the morning. Any body have any other suggestions? (both coils ohm 835 on + and - connectors to the coil towers. Should these be equal?