Thank you so much Jim for your generosity but I just bought a pair of kits on Ebay for $49 to reinforce both doors. I'll just sell what I don't use on ebay to recover some of the cost to keep my investment under control as usual.
Getting ready for our big trip, I'm going through my 2350 to-do list.
I finally installed the fridge door reinforcements, deciding to install both top & bottom since both fit fine. Who knows, maybe the top one will do some good. The large thick washer that came with the kit fit very sloppy with the inside diameter way too large for a nice centered fit. It also stuck our far beyond the rest of the hinge, not a nice look at all. I decided to replace it with two smaller and thinner conforming stainless steel washers, placing one at each hinge to assure there is no binding as was intended by Norcold. I will keep an eye on them to make sure they do the job well. If not, I will replace them with larger, but still thinner ones. It is done easily enough.
The installation took all of about 20 minutes for both doors. Now I'll rest easy, not worrying about them any longer. The reinforcements look nice and I understand now how they offer reinforcement, though I am not sure "how much". I wonder why Norcold is not installing the reinforcements on all fridges sold. Maybe the latest models have them or something equivalent better integrated.
For those who wonder what the reinforcements are, here is what they look like, big pictures to see the detail better.
Notice how huge the original washers are?

Here you can see both top and bottom reinforcements and the thinner & smaller diameter stainless steel washers.


I will be putting this into the Tips & Tricks area.