As for the problem you are facing with boiling, it is hard for even the dumb to overfill a battery with proper battery handeling trainig, and an auto water system. I would be curious to know a few things about your batts- what is the a/h rating but more inportanly the finish rate on the battery and charger? Are the smart chargers set at a 5 cycle equalize or has that been shuffled? I ran into this problem with a large fleet a few years ago and it ended up being the chargers were not finishing the charges at the rate specified.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.