Touch off

Hello, I have a shopmaster mill turn. I am having issues with Mach3 turn, the machine does not have home switches and I'm having a hard time touching off tools. Everytime I touch off x axis and input dimensions of the cut when I set to G0X0 with the tool called it is always off. Almost as if the settings are incorrect or something... The stepper motors c are not skipping. Any help or suggestions

How do the numbers on the Delos dro compare to the Mach 3 dro? Is there some lost movement somewhere? Are the steps per unit set up correctly? Backlash?

Maybe a video would help.

This is my ports and pins set up in lathe mode. Hopefully it helps.