Hello all. I am having issues with my 2008 RT charger, 5.7. The motor is stock, and is throwing codes p1411 and p1416. I changed the plugs, mds solenoids, checked pushrods and did a visual inspection of the springs for cylinder 6. I reset the codes and nothing. The car runs very rough, unless in fuel saver mode. Anyone have any suggestions or need more info? I'd appreciate any help. Thank you much.