Dicor or Eternabond

So, I noticed that KZ totally cheaped out on the front roof-to-cap seam on my '17 Durango 1500. Silicon bead along the seam, covered by a 1+" wide seam of Dicor, EXCEPT for a gap of 3-4" at each end, which is how I know there's silicon under the Dicor. Cheap, cheap, cheap!

Question; should I get a tube of Dicor and cover those 2 gaps or use Eternabond?

Lyle