Steven, the
Eco is a fairly uncommon make, so you may have a wait before another
Eco owner comes along.
It is similar to a
Boler or
Scamp. The measurements may not be the same, but the door fit issues are similar.
I think if you post some good pictures of the problem- close-ups and from further away, different angles- you may get some useful suggestions. Show the hinges, the door alignment in the opening when closed, the floor threshold area, the gap at the bottom, and anything else that seems pertinent.
Have you checked the condition of the frame carefully? Are the closet by the door and other interior components present and solidly attached to the shell?