Tailgate adjustment?

just curious if anyone knows if the tailgate can be adjusted (front to back not side to side)? The driver side where the tailgate meets the rear quarter is flush but the passenger side is pushed in from the quarter.

I was looking/thinking it would have to be the lock striker (guessing that’s the loop on each side) but Just trying to check for confirmation before I start messing with it.

 

Not like anyone cared to chime in … So I went ahead and adjusted the lock striker. It does have a little bit of play. I pulled it out as far as it would allow and torqued down to 21 ft lbs. it’s still not completely flush but a lot better than before. I don’t have before pictures but before it was a good 1/4+ pushed in from the rear quarter. Now it’s maybe a 1/8 or less.