Scaling a stock suspension car.

Finally came into this century and bought a set of corner scales. My duster has always launched pretty well for what it is, but it always squats the right rear, and picks up the left front more. Looking at videos online of proper weights when scaling it usually is a four link or more adjustable suspension.
So what corner weights do you shoot for on a stock suspension and severely tire limited combo? Stock front suspension, /6 bars, Viking shocks, rear leafs and Vikings.
The car is front heavy (all steel body, full cast iron motor, full interior, full exhaust) lightened where I could but about 56% on the front. The way the car squats the right rear makes me think that there should be more static weight on the left rear? At what point do sacrifice shock travel for corner weights? When first on the scales, me in the car it was 19lbs heavier on right rear.