You are landing on the main wheels first and not on all three ?
If you got all three wheels on the ground at the same time in a PA-28, you'd have to be going so fast that the rudder would be "steering" the plane very well, the nosewheel would have less to do with it.
Letting alone the steering issues, three point landings in a PA 28 (or any tricycle aircraft) are a bad idea.