We have circupool SJ-30 chlorinator system. I have noticed chlorine levels down. I looked at cell to make sure it is working and noticed a slight seperation that was causing tiny sparks. Have shut it down before it hurts main unit (mother board). I was told that the RJ-30 can be substituted and is a newer better cell replacement electrode. My problem is we are not sure how to dissassemble and replace with new. It looks like protective plastic piece between electrode and cap is slightly melted. How do we get the old electrode out and new one in? Also, will RJ-30 be compatable? Thanks for your help.