I've done the same thing, move it down a half inch .... move it up a quarter, forward, back , forward again slightly. I've found that as one's riding situation changes, it can necessitate the adjusting of one's position ever so slightly. New longer distances, new route....pumping a higher gear(N/A), cruising vs. pushing. If I crank home HARD it'll hurt the fronts of my knees as I'm really pullin back as I go over on my roatation, if I cruise home reasonably nada.