Veering left after touchdown

Are you flying a Cessna? This used to happen to me and I couldn't figure
out what I was doing. The plane also needed a tremendous amount of right
foot while flying. We moved the maintenance to a more knowledgeable shop
which found that the little metal block in the nose gear that centers it in
flight was worn. When the nose gear was extended, the wheel was cocked and
acting like a rudder. As soon as the block was replaced, the swerve when
the nose came down went a way. The wheel was cocked when fully extended.
Until the strut was compressed enough to let the steering become effective
again, the plane was trying to follow the nose wheel.
--
Roger Long