Creating sheet seeds for A3 in 1:1000 - drawing is shifting in the sheets

Several times I have tried to create Sheet Definitions following the videos in the OpenRoads Designer WorkSpace Setup, step 7.

I have tried setting them up in A1 in 1:500 as you do in the videos and I have tried setting them up in A3 in 1:1000, as we would prefer. None of it gives me a useful result.
The delivered ones from the Metric workspace seems to work, but this is what I get, when I use the ones I create: 
The drawing seed is offset from the sheet, and it gets worse for every sheet.
The border cells must have their origin in the lower left corner.

Can anyone please help me finding out what is going wrong?

I am using OpenRoads Designer Update 4.
I attach a zip containing sheet seed, preliminary border cell library, Plan_or_Profile_Start_Seed.dgn and the resulting dgnlib.