Can a component after complete breaking reverse ?

Yes it can reverse and finding the optimum amount of break-in requires careful and constant calibration. This is easy to do;

1) Play break-in sweeps in upwards direction only until you achive the desired level of break-in and sound
2) If you find it drifting away from optimum level of break-in (from too much play) then use break-in sweeps in downwards direction to regain optimum sound.

This works for me every time ;-)