Try experimenting with one latch....spray the internals with silicone spray and then do NOT touch it, or wipe it, or work the latch, or anything. Just use a tissue to catch the drips and then let dry overnight. I recall certain silicon sprays will melt certain plastics and recall this might happen with silicone spray and PC latches. If you don't touch the latch after spraying it and just let it dry overnight, you will have either created a plastic blob or a well working reliable latch. It is surely worth experimenting on one latch if you have a stash of replacements.
Jatrax, our pantry has a big honking steel pull pin at the top to secure the slide then I think the little latch for the door. Are the new rigs coming out with only the hook latches on the door instead? Or do you lock the slide and still have the door pop open?
I find it interesting that most failures others are having are on the catch side while mine are all on the hook side. I did notice that the holes drilled for the hooks had caused a mound around the holes and I believe this would cause more stress on the base of the hook as it would make it more difficult to distribute the stress across the whole base vs just over the screw points, which are where the breaks are occurring.
I hope SouthCo today is as good as earlier times.