Floor heater airflow

[Danfrsocal]

I have a 2017 coachman chaparral lite a 30rls and the floor has 4 registers or floor vents. One in the bedroom,one in the bathroom,one in the kitchen and one in the living area. My problem is the two vents the ktchen and living area barely have any volume and the bathroom and bedroom will blow you out of there. So how donyounfix thos problem