Driving out of town 6 hrs from home on Labor Day weekend. 2019 Ascent (76K miles) is vibrating, rumbling & feels like transmission slipping too, called home Subsru dealer & they can’t help other than tell me to get codes at an O’Reilly Autoparts. Nearest dealer will be closed all weekend. Codes reading p0300 (4/6) Random misfire detected and p0304 (5/6) Cylinder Misfire detected. Subaru replaced our first transmission under the 30k miles mark. Now this. Had the car in dealer 3 weeks ago because I thought I felt slipping again in 2nd transmission. Tech said they couldn’t replicate what I experienced & no diagnostic codes. Clearly I did sense correctly something is wrong, any advice?