I have all of the black books and I'm sure I'm done using them. Now they're stuck in my inventory. Has anyone been able to get rid of them?? Lots of help would be greatly appreciative.

They're still useable you can go back in to switch out the powers. Sorry you'll just have to live with those weightless quest items in your inventory.

This.

Besides, I'm bugged with weighted quest items in my inventory that won't go away.