I just had my alignment done on stock suspension, .05 toe on all wheels. Car tracks straight when I hold the wheel perfectly straight. If I let go of the wheel it tracks straight for 20-30 feet or more but bumps in the road eventually cause it slowly drift right. I'm in Mass where roads are mostly bad unless they're new and even those become bad after a couple of winters. When it drifts to the right the steering wheel is sightly to the right, maybe 2-3 degrees. Is there a reason the car eventually eases to the right? Could it be the weight of the engine? I weigh 150lbs so I'm guessing the car is heavier on the passenger side.