Before Hy-lift Johnson there was just Johnson. They had one of the best lifters on the market. Every lifter they sold had been hardness checked. Around 1990 they stopped this process. It makes sense to me they performed this QC test "for a reason". I'm doubting it was to keep an extra person employed.
Now after thirty years of excuses we know that most lifter failures are due to soft lifters.
FWIW
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