Removing tranny case

To remove my tranny case on my zip I have to take the standard air box off but how do I get it off. I know theres a screw in the centre of it once i loosten that it becomes less secure but dosent come off. Any ideas, hoping someone with a zip might be able to help

 

Just undo all the bolts and pull really. Some get a bit stuck if you dont open them for ages, most of the time its just a bolt that you forgot to remove but its as simple as that tbh

 

Found it there are 5 screws so dw thanks