My door just started rattling when hitting bumps and I noticed that I can move it in and out when it is closed. Can the door be adjusted to stay shut properly or is this something I will have to deal with?
Sounds like you have chassis twist. I would strongly recommend some sub-frame connectors. Do you drag race a lot? If you do thats why your doors wont close.
If you dont have chassis twist, the nuts and bolts in the door might just need to be tightended or adjusted. I'm sure you can adjust them somehow.
It is adjustable, the post on the body that the door latches to will move in and out when loosened. If you can get it adjusted with that then it is probably in the latch itself.