Thanks Julian, as the pic shows, the spring is of a different type, this the same as my workshop manual, wrong.
The spring in this pic shows a long leg slotted into a hole, in a lug, which is a part of the inner G/B cover.
I believe this type was fitted to singles?
The spring 68-3053 has two loops, one (inner) for the anchor peg (at 9 o'clock) and the other for the spring plate 68-3054, which sits slack at about 6-7 o'clock.
The spares book shows this arrangement with the spring plate hook/lug facing outwards at 12 o'clock, presumably when fitted.
I am unable to find any pictures of the spring and plate actually fitted.