To recut the checkering on a gun stock, go over each line with a checkering tool. Each line must be cut multiple times until the desired depth is achieved.
MX-28, stock lightly - D.C. Whitman Custom Gunsmithing
Filling bad checkering, and recutting - The DoubleGun BBS @
How to Checker a Gunstock Presented by Larry Potterfield
How to Checker a Gunstock Presented by Larry Potterfield
Gunsmithing Journal
How to Recut Checkering on a Gunstock - Gunsmithing Journal
Gunsmithing Journal
Considering Checkering — Reid Bryant
Recut checkering on Springfield 1922 stock- before & after
Re-cutting the Checkering on a Remington Model 11 Gunstock