Greg mine has about 30lbs more on the RR. Car is 50lbs heavy on the drivers side. Heavy drivers would make it want to go right with no preload. My housing is dead square in the car with no rear steer. The wheelie bar wheels are equal to the ground on both side with me in the car. It'll go well past the 60ft clocks on the rear tires dead straight. After the intitial 6-8 ft t rides the bars the entire time in the air. I'd check the housing for rear sterr.
Doug