HP 15C CE key bounce

[Johnh]

I get a double bounce maybe once every 3 or 4 days, and Im using it often each day. It's borderline annoying. It helps to be deliberate and consistent in getting a firm key click. But when it does happen it's never clear why and I can never reproduce it! If I had the means to extend the tolerance between second clicks I'd do it. I'd never need to repeatedly click a key more than say 3 per second and that would be very rare.