Tips on removing protective material covering test points?

I have a board I'd like to access the test points on (see image). But they are covered with some kind of black/transparent protective material.
Carefully scratching it with my knife leaves traces on it.

I don't want to remove the heat shield if not absolutely necessary and everything has to stay functional.

Is there any non-destructive way I can uncover the test points with DIY methods?
Or am I out of luck?