Product review (1 stars): Shoddy part and sleazy vendor
This part failed almost immediately - within a few weeks.  First, it stopped working most of the time (but not always), when turned to "Hi" - the burner didn't turn on at all.  Then (again, sometimes) you could turn it without pushing down.  And soon after that the turning motion started to feel like it was filled with gravel, not smooth like the other 3 original mechanisms, which by the way lasted 20+ years.  What a danger - the stove top might or might not turn on when you use this knob.

The switch itself gets 1 star for failing right away.  The vendor, QuickShipParts, gets 0 stars (if that were possible).  They refused to replace their defective merchandise because it was after the 30 day warranty period.  That should ave been another red flag - an outfit that sells a critical electrical part for a stove top with just a 30-day warranty.

Shame on me - I guess I should have known that buying a $17 Chinese-made knockoff part for a critical appliance would be a bad idea.  So, do what I finally did, and buy a quality, genuine replacement part directly from the manufacturer instead of this racket that won't stand behind the cheapo junk it shills.