I have a Nikon P500 and am having a difficult time finding this 'older' lens cap for it - LC-CP23. Do you know if newer ones would possibly work for it as well since they are so similar like the LC-CP24? I've got to imagine some of these other caps will work with it. In fact, why wouldn't a generic cap work as long as its the same diameter and basic design? These things are not spaceships.