I want to run two batteries in parallel on my new camper but I'm currently a little short on tongue space. Currently the spot for the battery is on the passenger side tongue arm. Since the two deep cycle batteries I have run about 60 LBs each, is it important to balance both sides of the tongue? I can re-arrange things to make this happen (previous owner moved spare to the tongue and also replaced the original roller jack with a bolt-on one). Or can I get away with centering the second battery in front where the stock jack used to be? Why do I have two deep cycle batteries? I was talking to a guy I know about how excited I was to get my first camper, and how I needed to find a good deep cycle or marine battery. He said, "Well, the place I work gives us deep cycle batteries for free because they rotate them out of their Universal Power Supply applications after a year or so. Have two I have laying around." So I got two batteries for nothing.