Nuevo Wing mirrors

Has any one had a problem with the wing mirrors on a 2009 Peugeot Boxer not locking in place when folded out? With the pressure of the wind when driving they slowly close in until all you can see is your hands on the driving wheel. My Nuevo is going back to the dealers on Wednesday to be looked at, I just wondered what they are going to tell me.

This problem must be unique! Any way mirrors have been replace, thank you Derby Motor Homes for your excellent service!