Hello,
I write in English please. I noticed a couple of areas near Bornholmer Strasse Station, you have a gap underneath the tracks, it might have been missed when checking the route. I put screenshots up of the affected areas to help you find them.
Kind regards.
Steve.
P.S. This is a brilliant layout, Jan you should be very proud of your achievement, well done and thank you for providing us with such a fabulous route.