sorry to hear about your mishap, yes the quality is quite different from normal laptops. Try to switch (carefully) with extreme seldom used keys or check from a defect or unused laptop. For the future, it might be more simple with keyboard stickers.
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1981 soldered my first Sinclair computer 1K, tapedeck * 1984 build and sold IBM clones 8Mhz, 512K, 20MB HDD * 2018 messing with ultrabooks