Oh yes, I run a 6 color cd 102 and can always count on some drift in position. Not much, and always in the same unit, and always about 6 to 8 points. It's strange because it only happens once during m/r, then I'm good. It's a communication problem between the console and the unit. Our mechanic says the register "brakes" are good because the position holds after an "e-stop". It's one of those things you get used to, and always look out for. I've encountered diagonal drift as well. Wait until your pull lay adjustment starts walking across the feedboard on its own. Love that Heidelberg software