Another thing to do is to look at the top of the door. There is a plastic block attached to the door that contacts the door header. I presume it is there to stabilize the door when closed to keep it from squeaking and vibrating. The one on my coach really forced the door down and required you to slam it shut and tug hard to open. I took a piece of 2X4 wood and a hammer to drive the metal door jamb header up at the point of contact with this plastic block. Small taps and then try it. After about 3 taps the door opening and closing was 99.9% better. I did readjust the latch bolt again to complete the repair.
Keith & Brenda
2018 Coachmen Galleria 24Q
2017 Heartland 3160EL Bighorn 5er