Haba Kullerbüh Connector for Towers

You have Haba Kullerbüh rails, 

you have towers, 

tower connectors and 

rail connectors.
 

What is missing? Correct: A rail connector on top of towers.

I suggest to print it in PETG, because PLA is not flexible enough and the connectors will break more easily in PLA. 

I did nothing fancy, just used the original model, added half a tower connector and added 4 side walls. But maybe others use this too :-)

Here on printables i could only find the connector.

The rails and towers are still on thingiverse.

If interested i can give the links below.