Finally finished diagnosis...ok I have been busy. The dead cylinder is from a failed stick coil. My dealer says there IS a catalytic converter in the muffler and that is why it was glowing orange inside and baked the black finish off of it....unburnt fuel, cat, heat....do your own scientific explanation
Meeting with the dealer Tuesday to see about warranty covering this...I am 3 months over the 36 months, but only have 22000 miles....
Btw...getting to the plugs is a GIANT pain in the butt