Durocoat is a paint.
When using it, I always apply thin coats like directions state.
It will not fill the pits unless you spray it, sand it, spray it, sand it, spray it, sand it........
Depending on how deep the pits are, structure integrity may be compromised and paint will not stand up to the duty.
Another thought if the pitting is not deep is to use J-B weld (sparingly) as filler, sand smooth, then durocoat.
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