I have a number of square apertures to machine. First Iwant to pilot drill them, then plunge the cutter in these drilled holes and machine. Icreate one window for all the apertures, then goto custom,build cut & approach. I select the region then the pilot hole axis. I do this for each of the apetures. It all looks good but it doesn't work as the cutter does not start in the same place as the drilled hole. Can somebody tell me what I'm doing wrong.