I'm sure you guys know I left in late 2014 to start Forward Controls Design 
In my last conversation with my former partner earlier this year, he told me KNS had sent them detents that were below the hardness they should be, that was the first I heard of it. Previously (as in while I was there long ago), premature deformation of the detent was traced to the detent groove being milled out of spec. This can happen when bits wear out and aren't replaced as frequently as they should, the groove is malformed and there could be burs, both could wear down a detent's tip in couple dozen rotation cycles.
Roger Wang
Forward Controls Design
Simplicity is the sign of truth
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