While I've enjoyed using my tank setup for the first 2 weeks, I have had many troubles with it overall.. Today I took alcohol and Q tips and cleaned the inside (threads) of the batteries and the threads inside the battery charger too. This is all I did and after the batteries and charger was dry I tried them out. They worked much better.. IT seems like it's always something with this tank setup. When it' works well, it's GREAT! When it's not doing so good it's just a bummer and I get discouraged and just plain tired of trying. Anyone else with me on this? What secrets do you have that might do the trick?