I received a klaf with PITOM HAKETORES, and the Lmnzach Menorah. Can I add nekudot/ mapik HEY dot with a pencil so that I can read it better?
Answer:
Yes, this would be permissible as this klaf is only a custom as does not have the rules of a Torah, Mezuzah or Tefillin. Nevertheless, common custom is not to have nekudot, so perhaps once you train yourself to read the, well, they could be removed.