Thanks loads for the help and solutions HS and Lina, I struggled with that for over a day.
I’ve extended HS’s definition through to the robot simulation now and it all seems to work. Using the focus align method eliminates six of my components.
Only curious thing now is the number tags which now seem to go from 0 to 5, and then a mess, in every column (Y direction).
Perhaps that reinforces Lina’s messed up list theory. I know from experience that getting this type of similar multiple items out of order is good for hours of entertainment when it comes to assembly! If all else fails I’ll just get my Sharpie marker out…