The F 111 WS lever is nothing like the GR/4. It had a F*7k off lever just under the canopy rail on the left hand side.
On my one and only sortie as a TACEVAL chase I was amazed to watch as my "stick monkey" operated it: as I remember it had about a 4 foot travel and it appeared to be a bit of a strain as he had to dislocate (sic) his shoulder or change hands to get it to the fully "aft" (72) position!
May 18 1988-Upper Heyford TACEVAL (CLSP launch) 50th TFS,airframe UH 006, Capt Carpenter-2.05.
It also had a less than intuitive method of fixing the radar/nav kit....not being particularly intuitive I never fixed it!
Fine aircraft all the same, especially above 600kts!
3P