J Tech Laser integrated with X-carve grbl (Inventables/Master version 1.0c)

ok, is 1.1e ok for laser work, or is it jjust anything above 1.0c.
I’m a little worried if I go back too far in firmware I’ll break something else.
Is it just a change in config.h as below along with a P0.00x or more involved??
#define DWELL_TIME_STEP 50 // Integer (1-255) (milliseconds)