Gradebook

I wanted to change the lessons of our course (which are SCORM) so that the score 0-99 displays a grade letter of "incomplete" where 100 displays "complete". This would clear up user confusion about scores where they aren't applicable.

I've done this in the gradebook, and it works great. But on the lesson contents page, the grade number is still displayed.

Is there anyway to always display the letter instead of the numerical score?