Stop in for a cup of coffee

Evening all. Debating whether to step in or not.
Mrs ordered pizza and is going to pick it up. Guess i will find out if heat is any better.

Was talking to a friend about the heat,he asks if it has rear heat.
I said do heated seats count,if so-yes...
So, I checked the heat door flippers/motors in the Journey. There are 4 doors from what I see. They all seem to work. Not sure about the fresh air inlet. It closes if I press recirculate , but seems like it opens as soon as I put the heat to the floor. I would think that should stay shut for heat. Unless the other door is closing the duct.
It still is not getting heat to the passenger side. I would have thought the air would be sent where needed after the core, but it looks like the two sides blow through the core separately. From what I read the right side of the core could be clogged and left still heat OK. The inlet/outlet are on drivers side of the core. Need to find best place to get at the lines to back flush it.