Have you recently been off-road where any parts (tie rods, etc.) have come in contact with the ground or rocks and such?
__________________ But the wisdom that is from above is first pure, then peaceable, gentle, and easy to be intreated, full of mercy and good fruits, without partiality, and without hypocrisy. James 3:17 (KJV)
After doing some research into how the power steering works - I suspect that the problem is the power steering gear - providing too much boost for right turns (different set of valves than left turns).