Omok discontinued?

None of the omok piece etc items are listed as drops in the Monster Book which I assume means they've been removed from the game - I still have a slime omok piece and an omok table on my Night Lord and was hoping to create a slime/orange mushroom set at some point. Are there any KMS players that can confirm whether or not omok pieces are still unavailable in KMS? Or do the pieces still drop in GMS but are just not listed in the monster book for some reason? (unlikely, I'd think)

Thanks for your help.