273 4BBL Throttle Linkage

Having driven manuals for most of my life, automatic linkages seemed self explanatory, just never really set them up. One thing puzzles me is some of the setups I've seen don't seem to have a return spring on the slotted upper link. I would want a guarrantee that the linkages return home with the throttle going to idle position; the manual shows springs at least for the vintage I have. I have the bell crank mounted on the head, and there are no spring returns other than the throttle. I would want to put a spring on the new upper arm.