Shardwurm fangs recently broken?

[Splorf22]

I got 3 of them pretty quickly, then I logged and since then I haven't gotten anything to drop in over 30 kills.

If they are supposed to be 1/10, there is like a 4% chance of that, and since you need four of them, it would be pretty evil of Verant if the chance was less.

I have a suspicion that the fangs were swapped out for the claws.