DNS Slave 2 /var/named/slave/db.***.*** failed: unbalanced quotes

As the topic suggests my DNS 2 nameserver would not start up due unbalanced quotes. One of the problems is, is that the dkim_key get's cut off, so it's missing the final lines and the " of the key.

At first the script used to transfer and update, squashed the zonefile in to 2 lines, more machinecode than human readable.
Then I tried to sync the files with rsync without the script, which resulted in the problem of the dkim key getting cut off.

I have CWPro setup running on 3 Google Cloud Instances and followed the setup as described in the CWP wiki.