First of all....don't make the mistake of trying to see how your Swiss machine is like your conventional lathe.....ITS NOT. I own, run, set-up and program both, the two are quite different. You can only make roughing passes on short parts that won't pull out of the guide bushing. The "Z" IS NOT BACKWARDS, the tools do not move in "Z", the headstock does. Get to know and understand G50 (work shift), it will really help. I have been running swiss machines for over 20 years, the people who can't make them run are the people that think they are like a CNC turning center. They are far more delicate. Get creative with them, that is what will set you apart from the rest of the world.