How much bearing damage is too much

I think everyone has scratched a cam bearing.
Smooth it carefully, chop the threads off a coarse thread bolt, I use an old cam or similar as a "handle" and screw the 2 cams together.
It kinda gives you better control on the way in/out.
If it's on a stand, roll it over, and you can help support the cam thru those openings .
Good luck .