The Hidden Forest

I'm attempting the Cleric 3.0 quest andI I've hit a snag. I'm to the part where I'm supposed to loot four different types of pristine velium off of four different Ry'Gor Velium Miners in Crystal Caverns. I have been camping these mobs for many days. Two of the types, the Fragment of Pristine Velium and Slab of Pristine Velium drop roughly 25% of the time. Each have dropped a dozen times or more for me. The other two, the Block of Pristine Velium and Slab of Pristine Velium have never dropped. In a post from May 21 of this year, I see that there was a planned change on these camps to change from short (5-6 minute) spawns with a 5% drop rate to a longer (3-ish hour) spawn with 25% drop rate. The spawn rate is indeed several hours. And the alla clone shows a 25% drop rate for all four pieces, but this cannot be true for the block and slab. Can you please check on this? Thank you!

I've double checked it but the drop chance is exactly the same so not sure what to say.

Thanks so much for taking the time to check.

Spent many days there and the pattern has held as I reported. I'm just going to move on and consider this broken. Lots of other things to do. Cheers!

Just to be absolutely sure I just went and killed all 4 spawns and got each of the 4 drops after 3 or 4 kills, the longest was the fragment for me with 6 kills and the shortest was 2 kills. You're definitely killing all 4 spawns? Each drops their own piece. You might just be very unlucky!

Yeah, I'm killing all four over and over. Have at least 20 - 25 kills on all four (conservatively) and the same two keep dropping. Killed more today - same thing. I'll admit I'm not the luckiest guy as far as drops go, but I'm also math savvy enough to recognize a statistically unlikely pattern. I'm giving up and moving on... Thanks again for at least looking into it, I do appreciate it!