If you switch the rocker all you are doing is moving the wear mark from one lobe to the other. You need to remove the rocker and condition it with emery cloth. The mark may never go away, but it will not get worse.
See link below.
http://www.sr20-forum.com/showthread.php?p=67713#post67713
See link below.
http://www.sr20-forum.com/showthread.php?p=67713#post67713