Hi Craig
Yeh didn't quite understand the reason of G31 code, but yes that activates the probe to work, I found another thread on this forum and tried "G31 Z-4 F40" and yes it does the job.
I think I can call it a CNC know, gonna try the spindle motor today, But, I'm gonna have to do a few mods to "X" axis and Gantry its not stable enough, got more bits on order "wife would kill me " if she knew what i spending LOL
Very grateful for all your help.
Regards John