We have a X23F and our kids could not open the door at first, it was too hard for them and it was a little difficult to close as well. So I tried to adjust it by moving the plate on the door frame and it was a little better, but when it was in for a list of warranty repairs I had the dealer look at it. Our dealer fix it and a whole list of thing we found the first year we owned the camper, the door lock now is way better then I could get it. The kids can now easily open it and close it (when they remember to) but it all fell under the warranty as there was no chage to us and it made a big difference.
2007 Toyota Sequoia
2014 Jayco 23F