I have 2010 Ford Transit based Hobby. The double locking feature does not work. I went to a local locksmith to see about fitting deadlocks but he thought the transit should have double locking already on this model. I contacted Ford Ireland and UK but they cannot confirm it was fitted.They did tell me that because it is a motorhome it may not have been fitted. Has anyone got a transit motorhome with double locking on this or similar model?