Jim
Its a common thing! Most pilots get times when they do greasers, every landing is a good one until one day??? A bad or heavyish landing. After that the Greasers seem alusive the landings too firm.
It is that flicker of confidence which changes, that slight apprehension. You are tense, scared that you will do another heavy landing.
Firstly make sure the aircraft is properly trimmed. As you add flap retrim so the controls are silky smooth and you are not fighting out of trim forces.
Relax. on the approach take your fingers away from the column and guide it using the palm of your hands.
As you start to come towards the final 100 feet gently bring your fingers back into play.
It is just confidence! with confidence comes relaxation and the knowledge that you are in control of the aircraft not the other way around.
Even talk to the damn thing and tell it your boss
Pace