Canon IR c2880i faint black, good color

I received a used IR c2880i from a local business, score! When I printed some test prints the color looked perfect, but the black was faint. I figured it was out of black toner. I replaced the toner but the printer is still printing black faint. After I took out the empty toner I vacuumed out the area the black toner sits because it was pretty tonered up. I realized after the fact that the door in the bottom of that compartment was stuck open. I think I may have vacuumed up a bunch of toner out of the area below the toner cart.

Any thoughts on what I could do to fix the faint printing would be super appreciated!