I have a Big Bingo that I am in the process of balancing. I have a Magnum 180 4 stroke for power. Plans call for up to 160. I need amost 20oz to balance. Does this seem possible? I have the 6v battery mounted as far forward as I can get it. Using a Airtronics 2.4 so the rx is very light. And, yes I did sand as much as I could off the rudder and stab.