Forgot to say thanks Graeme. As you can see from the above switching off G28 could be an option for me.

Clive, Neale,
Thanks for your thoughts on it. I thought about editing the code in notepad with find replace (G28 > G0) and am sure that would work, but bit of a pain to do it every time.

I will try and look into the F360 online site of post processors as this mentions a Mach 3 version with various features including something about G28 usage. . . With a bit of luck it will create G0 instead of G28