Well what a disapointment :(
Re wire complete and everything hooked up and guess what......yep EMI problems.
Having paid close attention to not creating earth loops when grounding, replacing all cables with shielded cables and fitting ferrite rings the X axis stepper is twitching :(
Looking at the scope it appears there is a massive ammount of EMI comming from the spindle motor and to be honest im at a loss as too how to reduce it having done everything previously recomended by other's.
Maybe a new spindle motor ?
Recomendations for a suitable replacement would be nice just in case it gets to that point.