Weight hole deep (3") on the PAP will cut the differential, reducing flare and smooth out the reaction off the spot. If you want to do this, start with a small bit (5/8-9/16) and check statics to make sure you are legal before going bigger. You want to hit the core, so small/deep will have more effect than large/shallow. Also, as others have mentioned, using a rougher underlying grit before you polish may help.