Hello to all . Finally got it sorted ? The lathe was doing all kinds of crazy things , even the limit and e stop was dodgy. So I did a total reinstall off mach3 and smooth stepper drives. Still crazy .So I got the pc from the house and used that and its perfect. Does all the things it should . So got a used gaming pc ( fast processor and 8 meg memory) and that works fine too. Any one want a slightly dodgy ibm pc.