An easy formula to determine weight-relation between frontrod and siderod.
Take the length of the frontrod (LFR) and multiply it with the additional weight on the frontrod (WFR). Divide the result (XFR) through the length of the siderod (LSR) to get the weight (WSR) to add at the siderod. If you are using two siderods, divide the additional siderod-weight (WSR) by 2 (WSR/2).
So we get a reliable basis to tune our stabilizer-setup individually. NOTE: The math can cause a hughe increase of weight! Are there great differences to your actual weight, increase the additional weight step by step!
To much additional weight at once can cause physical damage! Increase your stabilizer-weight slowly!