Stop in for a cup of coffee

Anybody ever work on a heater box in newer Mopar? Wifes 09 Journey has dual temp control for driver/passenger. There are separate controls LO -HI that operate doors inside. Only one heater core. Drivers side gets good heat, passenger does not. It does change temp from ice cold to luke warm, so the blend door is moving. Stuff I read talks about flushing the core, but not sure that makes any sense since its all one and it is heating one side. I did just flush the whole cooling system, but not the heater directly. Problem started before that. I'm thinking the door inside is not sealing at the end. I pulled the glove box and can see the thing move when I change temp. I'm thinking I might pull the actuator off and see if I can move the door by hand. I REALLY do not want to pull the dash. From what I have read its $1500+ for dealer to do it depending what parts they need internally can easily be over $2K :eek: Have lived with crappy AC in the Magnum last few years for same reason. That's a complete dash pull to do the evaporator which I believe has a slow leak.