Modifying standard schematic symbols?

I’ve gotten bitten now a few times that the standard schematic POT symbol isn’t numbered the way I assume so I want to add a ‘CW’ label at pin 3, like this:

Background is this https://electronics.stackexchange.com/questions/340789/standard-for-cw-ccw-on-pot-schematic.

So, edit the built in symbol, added a CW label and hit save to new library. Everything seems to work fine. But when trying to use this symbol I get the built in one anyway. Only reason I can understand is that there is a simple name clash, that both are called “pot”? How am I to curate my own schematic library and not have to think about name clashes with built in ones? Or am I missing something here?

In KiCad v4, you need to put your own library higher up the search list than the official library. KiCad will otherwise take the first symbol it finds.

In KiCad v5, libraries are mapped via symbol library table, so this no longer applies.

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in kicad version 4 you need to either name your symbol uniquely with respect to all libs or take care of library priorities.

This problem has also been noticed by the library team. https://github.com/KiCad/kicad-symbols/issues/165

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