So as the title says, I'm not sure why but sometimes my Cargo Disk; Tarbash's Obsidian Cargo Disk sometimes won't hold Mithril Ore, it can hold 1050 of them but sometimes it stops at 1040 or 1046 and won't fill up unless I drag it in it. When it does that and my pet; Black Widow Pet is empty, it just skips my pet and starts filling my inventory until I'm overburdened... Or it fill up the pet, but also not completely.