When centering machine (F20) an dthen using g0w-2.5 cod to put machine at -63.50 and begin to run production cycle after the first cycle instead of returning to -63.5 it returns at -64.008. Why is it doing this, and how can I prevent this. Thanks

Do you have any "G50" commands in the program that you are NOT canceling correctly? That is usually the problem when that is happening.

Do you have any "G50" commands in the program that you are NOT canceling correctly? That is usually the problem when that is happening.
I will take a look at that tomorrow, was editing program yesterday so I may have inadvertently deleted one of those G50's thank you.