Which blend door actuator is faulty here?

Hi guys. I'm freezing in my car. I think i have a HVAC blend door problem and i have no clue where to begin. Passat 2017 with individual temp setting left and right. Left door is providing hot air but centre left outlet is somewhat colder, centre right outlet is cold and right door is also cold. I guess it has something to do with a faulty blend door actuator motor but which one and how can i take it out for replacement or repar? Seems to be an issue that internal lube gets stuck in wrong places inside the actuator. Could be repaired with a q-tip with some luck.