Thanks.

I guess the logic in my head is that if it's not centered at the lon/lat axis, then when you either pitch or roll readings would be off. For example, lets consider longitudinal axis only for a minute. If i mounted it on the left side of the plane, a roll to the right would read differently (in magnitude) than one to the left. A right roll would cause the device to have an upward movement with the roll further from the centerline, where a left roll is downward movement inside of the centerline relative to the roll. This makes me think you'd have very different measurements. Maybe i'm wrong?