around October 2008 we started experiencing a problem where the hole locations on some of our parts were out of location by1/4 to 5/8 in. This has only been in the Y-axis. We determined that if we cut parts from the middle of the table and beyond, the machine runs fine. It is when we place sheets near the machine “home” that we see inconsistencies in the parts. Some other items to note are that not all the hole locations are off, not all the parts are bad, and the part profiles and hole sizes are within specification. We have checked all the mechanical properties of the machine and not found anything. We have had the servo motors checked out. We have added additional grounding wires in case of electrical feedback. We have also run the “Rosetta pattern” 3 times and it came out good. Koike has sent a service tech to check the machine and he was unable to find anything wrong.