It could be the type of food you are feeding. What food do you feed?
You should not have to express them that often. Leaking anal glands are not good. My older female had her anal glands removed a few months ago because of problems, infections that would not clear up and leaking.
Jennifer
Welcome! I didn't see a photo, boo-hoo.
Funny to think of a goth couple with a black and white basenji, they look very "Count Dracula" in some ways, especially with puppy teeth!