Tuning out just a little roll over

[Everett Vassar]

Started out trying to remove some weight from my 81 Buick Century (Malibu) wagon.
After removing the front sway bar I had a real un level problem.Wound up solving this problem by softening up the pass side front coil spring.But for the first couple weeks I was working on the back and not the front So I wound up tossing the old stock springs,90/10 shocks and airbag for a set of Afco non adj coilovers in the stock location with 150lb springs.These were their recomendations not mine.anyway the car cranked over hard on the pass side rear tire and no amount of preload would fix it.so Afco recomended a 200lb spring on the pass side.That still wasnt enough till I adj in about 25% more preload on the pass side.Now the car leaves pretty good ...but still cranks over on that pass rear somewhat and I have learned to keep a little pressure to the left on the steering wheel.Some times it will make a pretty good move to the right at the hit but not every time...SO how do I get it leaving perfectly straight.a 250lb spring on the pass rear? a anti-roll bar? Rear sway bar? Tire pressure? Maybe I can re install the stock coil spring on that side to help out..I talked to Afco today and they suggested going to adjustable shocks.Well Hell I just bought 500 dollars worth of shocks and springs from them.so I should toss my brand new shocks under the bed and spend another 600 for new ones?..I thought about buying just one adjustable shock for the pass rear so i could run it stiffer than the drivers side.Just like putting a air bag on the pass side.Afco thought it was a bad idea.