Hi, My arducopter board is doing strange thigs. After I used the openpilot cc board on my quad for several months and got a reliable stabel flight and hover, I bought the arducopter board as it had the altimeter and gps. My sun and I spent a week of setting up and trying to get it stable enough to hover. Recently we tried again and it hovered fine for 4 min and then there was no control and it dr…