Listen to this article The German car manufacturer has been battling to get on top of “gremlins” inside the W13 that is not allowing it to unleash the full potential it believes the car has. It has put on hold any major updates to its car until it fully understands what is behind its difficulties, but that has not stopped it delivering some minor developments for this weekend’s Emilia Romagna Grand Prix. With the car suffering from excessive porpoising, Mercedes is trying to hone in on the triggers for the phenomenon, and the air flow separations that can set off the problematic stall as the car nears the ground. Several of the Mercedes tweaks introduced at Imola are focused on this airflow separation factor. Mercedes W13 detail Photo by: Uncredited As seen above, it has reprofiled the upper shroud of the side impact spars and its mirror housing. The team says: “These geometry changes have been introduced in order to remove small areas of sep …