We have a 2008 DEK horizon 03i this machine has been a very reliable system.
we are having an issue with the print being offset in the x .2mm
I have run 4 different boards - same issue on all. same offset. i can print the board 10 times over and over and the paste is always in the exact same place so its not a repeatabillity issue. We have the dek calibration kit and we have run both the vision and the offset calibration. If i put in an offset in x it prints good every time but i don't want to start fudging the machine to make it print - it has never needed an offset before.
If you use the calibration plate and stencil, that should fix the problem. I think that you are not saving the result from the calibration test. Double check manuals and probably with DEK technician, but it sounds like you are missing a step.