נר תמיד

There is a custom to include a light in every shul which is on constantly, called a נר תמיד. Most people are aware of this. So what's the problem? I think that is what leads to a very popular misreading of a פסוק at the beginning of תצוה which is also found in אמור.

 לְהַֽעֲלֹ֥ת נֵ֖ר תָּמִֽיד

I think people automatically group the two words נר תמיד together in their minds and thus read it with a טפחא on להעלות and a מרכא on נר which is incorrect. It does change the meaning ever so slightly but I would never correct that on the spot. Maybe after the fact, I would point it out.