1996 Integra LS

When starting from a traffic light in first, I've noticed that the steering wheel pulls to the left, sometimes as much as 6 inches, then moves back after about 10 mph.

If I have a stronger hold on the wheel it doesn't go anywhere, only when I've got a few fingers resting and the car is under acceleration in first gear. It isn't any variation in the road surface and happens fairly regularly.

Any ideas of what might be going on? Thanks,