Just about every analog lighting board I've ever seen has huge dead zones on the end of the linear pots on some channels. I'm surprised the potentiometers work

Just about every analog lighting board I've ever seen has huge dead zones on the end of the linear pots on some channels. I'm surprised the potentiometers work at all given the abuse they go through. Early desks had no memory, so it was often a huge rush to set the next scene in the fader bank before it was needed.