Stuemper - thanks for the reply about the weights for books and notes.
I have collected a rather long list of missing or incorrect OBND object bounds, weights, the note/scroll vs book/tome flag and a few other oddities such as one book in a set that is a different mesh. I also found some objects that are open books when in the world and journals in your inventory plus two books (so far) that seem to teach Pickpocket.
I will check my list against the next patch then submit one bug report with anything remaining.
I would personally expect all books and journals to weigh 1.0 and all notes to be 0.0.
I have standard books at -9, -11, -1, 9, 11, 2, large books at -11, -15, -3, 11, 15, 3, journals at -6, -9, 0, 6, 8, 1, folded notes at -8, -5, 0, 8, 5, 0 (many are missing) and the open notes (torn page) a little larger.