So I am not sure if this would be a bug with GSender or a bug in Carbide Create 6 but here is what happens.
When running a job created in CC 6 the M3 command looks to not be parsed to allow the spindle delay.
Default, delay does not work:
M0 ;T102
M03S10000
Adjusted, delay does work:
M0 ;T102
M3 S10000