One evening I noticed that the kitchen faucet handle was skewed far off to one side and didn’t rotate to the other side as it should. I took the thing apart and found the whole pedestal was rotated:
It turns out that the screws on the clamping ring below the sink had worked loose over the last decade or so, allowing the pedestal to rotate just a wee bit as we swung the spout from basin to basin.
Of course it only rotated a little bit in one direction and never the other way…
I epoxied that aluminum plate when I installed the faucet, because the stainless steel sink top seemed too flexy. The plate stiffened it right up and it’s been fine ever since.