I knew well in advance before having my rig built in July 2019 about these .. I still ordered them
The painted portions are reused with the replacements (keeps you from having to try to color-match).
"3) There is no support on the inside back of both the door and black cap on top. The plastic door and black cap on top will expand and contract in heat and cold weather. I live in Orange County, SoCal and its always hot here so that means my door will always contract inward creating gaps and the black top, from the pictures below with bow at each end and get worse over time. "
This was when I was designing a couple options on another thread about beefing these up until FCA comes out with a better replacement -- and compared the 5th GEN to the 4th GEN was night & day. As stated, even if you get these things aligned PERFECTLY, the next hot or cold day the plastic will change again
"4) To help my issue to a certain degree, the body shop could only move the striker slightly down on the inside where the door latches onto in order to pull the door down to have the door not stick outward and away from the truck. (as seen in the pics below). This did not solve the issue but did the following: "
I posted up the service bulletin that FCA put out on another post as well ..
the striker ONLY affects the entire door position -- NOT the two outer edges all of us owners have been complaining about. I couldn't believe how FCA said to bend the striker this way or that way as an easy fix when another dedicated and hardcore owner on here documented the entire process of removing and doing things properly.
If you purchase some of the sticky-rubber-buttons, you can place them inside on the two outer lower corners and get the edges back out away from the main body.