Kickdown Spring Question

I was reading my TS manual on 904 and 727 transmissions, and it shows pictures of a small spring right next to the kickdown locknut, down near the gear selector of a 904 or 727 where you adjust the kickdown to where you want it, then tighten the little nut. My 79 904 transmission doesnt have this spring. Did they do away with the little spring, or am I just missing it?
Thanks!