Auto Transmission Shifting Issue Since 4bbl Upgrade

Are you adding your comments to Dave's suggestion that there should be a forward spring in addition to the KD spring provided by Lokar? If this is what you mean, the diagram posted by MoparLeo would seem to confirm a "two-spring" set up.

Yes that diagram is dead on. If you see the spring going towards the rear of the engine, that's the one that pulls the linkage forward.