Why is the German design heavier to port?

Why is the German design heavier to port than to starboard?

An extra gun had been placed on the port side; identifying and correcting it restored the design's balance.

The design reports more weight to port than to starboard, prompting a closer look at its fittings. Viewers identify an extra gun on one side during the live exchange. Correcting the asymmetric mount restores the balance readout. The moment shows why individual secondary fittings and their exact placement matter to a capital ship's weight distribution.