Yes... F3s carried the BIG tanks - 'Hindenburg's?' - on the inboard wing pylons and were cleared to fly with the smaller 'GR1' tanks on Left and Right Shoulder Pylons, not Centre-line. If the Shoulder Pylons were fitted the Skyflash/AMRAAM Lau could not be used.
We had a small number of Shoulder Pylons - without ERU fitted - in the Role Bay @ Coningsby sat on wooden battens and covered in plastic sheeting that we had to hide for Harry's inspection... when he could be bothered to coming up our way after coffee and biccies in the Engine Bay; never used in my two years there...