Hanayama Nutcase Puzzle

Beware—this puzzle is not for beginners!

There are two parts to this puzzle, made by inventor Oskar van Deventer: 1) Remove the small nuts by disassembling the nutcase, and 2) Change the order of the wording on the bolts from "nut-case" to "case-nut." Can you do it?

On a standard difficulty scale of 1–6, this puzzle is rated a 6.