Ok guys my batteries sometimes do some crazy things...so here is a very dumb question for you? Explain my battery setup to me...I have 4 batts and always run the starboard motor on 1 on the switch and run the port on 2 on the switch. When running the switch selector on 1 is it using 2 of the 4 batts or just 1 of the 4 and the other two are house batteries with the opposite engine running on the last battery?? My setup confuses me...im not really good with batteries if you can't already tell? Somebody explain the setup to me?