I remember these clues from another private server i played on.
Clue scroll #1 - Dig closer too dag rex? its very close too where dag rex is near his gate. dig a few squares too the left and you should find it.
Clue scroll #2 - Camelot bank. i remember being it on the far side near the ladder infront of the bank booths.
Clue scroll #3 - Slayer tower. when you get that clue tele too slayer tower and just walk straight intill your up against the wall. dig should get a casket.
hope these helps
*correct me if im wrong.