Hayter Harrier 41 carb spring linkage arrangement?

I have stripped my carb on a Hayter Harrier 41 and put it back together, at least it now runs, but it hunts with revs going up and down and I can see the idler rocking back and forwards in time with the revs I think I have put the spring likage arms back in wrongly does anyone have a photo from the top showing where they fit? Mine is a Tecumesh autodrive 3.5hp about 10 years old.
Thanks