Just a thought here but Ive seen the O.P state several times that his "low salt" light is continually on. Id guess that one of your problems in the beginning at least is that your SWCG could have not been generating anything when you were running in "super-chlorinate". Mine has a 4 level indication (green, green flashing, red flashing and red) and when it gets to the lowest indication it shuts off.
Wasnt sure if anyone had brought this up or not but it might be something to look into when you get balanced and start expecting the swcg to maintain FC levels.