Needed to make a fairing to cover this:
I hand formed this fairing:
Here it is on the workbench:
Still needs a little planishing, but it came out real nice and I’m happy with it. Next, it needs to be interfaced with or matched up to the wing root fairing. That will require some very careful trimming, a little bit at a time.
Then, of course, do it all over again for the right tank outlet.