It is possible to regrind the seating, but an alternative which most will find easier is to buy a reseating set.

It is virtually impossible to regrind the tip of the roll pin punch and properly shape the center projection.

This will regrind the surface.

When necessary to square up the blade of a damaged chisel, or to regrind a bevel that is badly worn, a fine grit grinding wheel at least five inches in diameter should be used.