P0300 case study: Chrysler 3.8 (SI Ep 5.3)

OK guys I promise this is the last misfire case study in the series :) These are in chronological order! It's a 2005 Dodge Grand Caravan with the beastly 3.8 V6 pushrod engine and a traditional waste-spark ignition system. Just when you think you've seen every possible misfire cause, a car comes along and educates you all over again... Enjoy! Ivan