Kent is a magical ore analyst, meaning he finds out all kinds of data in regards to ore. However, a monster stole his memolith, which had all of his data on it. This monster is located near Crawlspace Cave, which is on the other side of the mountain near Broadleaf; this is the same cave you went to for Sidequest 037. Of course, this monster is a Tainted Monster, level 45 Skrych, which is a Wyvern. Despite its enormous size, this monster moves around a lot and quite quickly. However, you should know all of its moves by now, so it shouldn’t take too long to defeat it. You’ll get Kent’s Stolen Memolith after the battle, so bring it back to him in Broadleaf to finish the quest.