Silicone Spray from Wally World solved my leak down problem. Turned off water, removed 2 screws and Took the water valve loose (no need to disconnect water lines), pulled the spring assembly out, sprayed the control rod for the ball valve, sprayed the spring pack (do not dis-assemble spring pack it is a PITA to get back together), aligned ball valve closed so spring pack slides back in easily, re-assembled everything. Sprayed apple amount of silicone spray top of ball valve and rubber seal, let it set for a couple minutes then operated foot control a few times to distribute the silicone spray on the ball valve and seal. Turned water back on and has held water for several days now.