Wondrous Tails not changing

[basilbc]

I'm not sure if this is how it should be working, but every time I turn in my wondrous tails I seem to get the exact same book back. I have seen with other people that the quest levels assigned change, but mine are always 1-49, 50, 51-59 and 60. I'm now level 79 and it's annoying to me that I never have a wondrous tails block I can use in appropriate leveled dungeons.

Is there something I missed that unlocks this changing?

Pretty sure it's just rng, you've just been unlucky (or lucky, depending on how you look at it!)