Setting

Before I forget, you can get rid of all the S10 and S20 codes for THC ON/OFF, they are the wrong codes for QtPlasmaC which uses M62 ~ M65.
linuxcnc.org/docs/devel/html/plasma/qtplasmac.html#qt_thc

They are also redundant as you are already using velocity reduction from M67 E3 Qnn codes.
linuxcnc.org/docs/devel/html/plasma/qtpl...t_velocity-reduction