is adjustable on jam portion - both horizontally and vertically. Before doing so try lubricating door "catch" portion liberally and work in by open/close repeatedly.
Otherwise... look at your door jam piece and will see lines marked for micro adjustments and as indexed on vehicle body like this:
As you can see, very fine tuning... Anywho, put wrap or two of painters tape around outermost bar of jamb piece (parallel to door skin as if closed. Open & close door a few times and note where the tape wears thru. Adjust accordingly (slightly and most likely in opposite direction of wear).
Triple square drive bit needed... can't recall size off hand.
Good luck
