The Air Distribution box on my Dometic Penguin II has 4 vents and I have difficulty operating the rear vent flap as there is a small plastic tongue that interfere with the flap. I think I will cut it but I just wanted to make sure it's no a bad idea.
I don't have the Penguin model, but it looks like it's there to hold the vent flap open. At most, maybe trim it ever so slightly to let the vent flap move back and forth over it easier.
Problem with Penguin II inside flap
Linear Mode
