A Genius on these Airforums fixed the hinge problem for us from a post last year. This may not work for yours.
Although we did pick up these clips in a bag, from our Airstream dealer for no cost... we no longer needed them. Keeping them just in case. We found a better option:
The Airstream owner used Zip Ties. Simple. Easy to attach. They work.
The nylon zip tie, I use TWO on each hinge if I can. Zip tie goes around the front and back and tighten up. I use a needle nose plier to tighten the zip tie... TIGHT. So far, no zip tie has broken getting them snug. After they are as tight as you can pull it, without breaking it... clip the excess, but leave an inch or less if you did not get it tight enough. Find a muscle builder to do the work... if you are unsure about trying this. I did it. The width of the Zip Tie seems to be 1/8-5/16"" or so. If you can break it, too narrow. These were my tool box and handy.
The Zip Tie holds the hinge snug against the metal on the door. You will see the gap on the hinge mounted to the wall and the door. Wear glasses if you do not.
Two Zip Ties will fit under the sink hinges, about an inch+ apart. One on all of the other hinges. You will see the space to slide the zip tie to secure.
I wrote a Thread of my experience some time ago, long forgotten where. My experiences and the ORIGINAL post I used their advice.
Our 2019 has had NO, NONE, NIX or any hinge break loose, come loose or given us any problems. Cheap, inexpensive, keep spares in the event you did not tighten the zip tie and it moved. Mine have not moved. They do not interfere with opening or closing.
This is my THIRD new Airstream. I was sick and tired of doors coming loose. The tiny screw would fall out and you are... well screwed by a tiny screw. Eventually you will find it... after buying one, if they exist other than an entire hinge.
The naysayers will pile on like a Quarterback Sneak at the one yard line... ignore. If you are afraid to try this... others... may try it. Our 2019 hinges are problem free as of today. We travel some roads that should have shaken the hinges loose... but are tight and secure.
Problem solved for almost nothing, as I had these Zip Ties in the tool box for much longer than I owned an Airstream. These will age out before breaking!
(Post #25 has our hinge style. You may have to experiment with yours. You can see the outside edge sticking out to secure to hinge on the right side.)