weight distribution for racing (BL Revo)

[zeropointbug]

I am doing some last minute rebuild on the Revo for the race weekend, and I was going to make a new, lower CoG battery mount. I was going to move it forward, and down, to bring the front/rear weight distribution to around 50/50. I know in the real world 50/50 is ideal, and makes for a very forgiving and predictable ride (ex. Mazda RX8).

But I am just not sure about this... currently the battery is placed right side, far back as it can go.

Is there anyone with some direct experience that can comment on what weight distribution is ideal for a Revo on the track?