Rules

• The U and A in the dial must swap with the other letters in the dial first.
• Each edge must replace other letters with a prev/next letter in the alphabet.
• The order of replacement of the edges is S, then D, then M.
• Each edge of the pyramid must replace one or both adjacent letters of the dial first.
• If an adjacent letter of the dial cannot be replaced (because it has already been switched) then an edge of the pyramid must replace an adjacent edge of the pyramid.

In synopsis.

• Insides of dial swap.
• Edges replace inside (dial).
• Edges replace outside (pyramid).