All older toilets (even Kohler) have issues. # 1 Allowing water in....# 2 holding it in the tank.....or # 3 flushing. This kit solves #2 and #3. How....# 2 The original style rubber flush ball seals better, provided a scrubby pad is used to clean the area where ball drops into and # 3 The 2 included copper wires, of different lengths are slightly narrower than the original wire. That means the wire will easily fall downward in spite of any ? mineral deposits? acquired over the years.
No binding is better than binding.