Sooo
I have lowered the speed of the motors in Mach3 from 60 to 50 (it rounded it down to 49.??? for some reason) and does not do it now but I think this is just masking the real issue?.

I did swap the X and Y over and the X was the one that still stalled so motor?.
I am thinking it could be vibration as well? LOL I have no idea.

If any one has any ideas that would be great

thanks again all