Piercing question?

I have enclosed a picture. I am new to the system and learning process, but how do I get rid of these piercing divots?

Crossfire Pro with THC
25 amp
100ipm
.06 lead in radius
90 degree sweep angle
0 lead in distance
18ga steel

Longer lead in and/or shorter pierce delay.

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Also get some plasma cutting fluid…it will stop the rusting