Regarding the request for a new column will Mr. Oliver Schulz contact you.
Regarding the last shipment:
There are two connectors for hand controls (see following sketch).
You can connect a hand control to each of the plugs. The standard scope of delivery is one hand control. Therefore we have shipped only one hand control with the column. But it would be possible to connect a second one.
Do you see other differences, which do not match?