Personally, I don't even go to Uldah for cul leves. LL and Gridania are far better for them, especially at 40+, because the only Uldah leve 40+ is Finger Food, making Deviled Eggs, which I guess you could do if you really wanted to, but I don't find it worth my time to go there and do it. I can usually get 6/7 Cul leves per reset between LL and Grid, then just use the remainder on my other crafts.