We have a Kohler tub. Drain is type with 3 linkages running forward from stoppoer. Took lever cover off, and there is 8″ skinny bolt with nut at end. Don’t understand how that bolt is supposed to attach (or precisely push down) the forwardmost link that’s attached to the stopper.
If everything is intact, there is a spring coil at the end of the rod going down from the lever. It pushes on the link to raise the plug. It does not connect to the plug linkage.