I just read your thread on tire inflation. I got the impression that you are running 80psi in your front tires. If that's true your pressure is too high, and could be the cause of any handling issues. Lower the pressures to what's recommended on your door jamb sticker.
Many suggest, after getting the vehicle weighed, adjusting the psi to what the Load & Inflation Tables | Michelin Truck
charts suggest and adding a few pounds as a safety cushion.