For some reason I have 2 seemingly identical files but one of them has a thick and dark font that is readable while the other one has a thin font that is annoying because it's too thin and becomes a light grey which has low contrast. This font seems to be a property of the book.
Can someone tell me how to choose between these 2 fonts?
Here is a picture:
[large image put in spoilers - moderator]
Here are the example files:
Book 1
Book 2