Had minor stumble at idle.Barely noticeable,and not all the time.Just passed 30k so replaced plugs as per manual,with OEM Champs.Stumble still there.Car screams through acceleration,with no hesitation.??Any ideas? Also occasionally when shifting manually thru gears..Trans blows by 2nd and goes right to 3rd .Once again occasionally .Has anyone experienced these glitches ? Any ideas would be helpful.Only had my R/T for a few weeks now,and want to keep it running perfect.Thanks for the help Bobby