Ok I opened and cleaned out each valve and when i purge the last one it sounds like their is air in the line.Also now i get a different valve that is leaking.Its like musical chairs.I have even changed the tubing and still getting the same problem.I need help asap..........Getting frustrated with this system but beats filling up with bottles.Does the bucket have to much higher than the rack? Like I stated before just started leaking out of nowhere and now i can;t get it to stop.Thanks