I'm having trouble getting a later layer to show on top of another - a car park to show on top of a sports arena - see http://www.openstreetmap.org/?lat=51.423296&lon=-2.835831&zoom=18&layers=M There should be 2 car parks showing on the stadium (left hand) but I can only get the small one to render. I've tried making it a higher layer which didn't seem to work so used an inner/outer multi-polygon. This worked for one of the two but not the other. I don't understand! Any advice please?

I'm having trouble getting a later to show on top of another - a car park to show on top of a sports arena - see http://www.openstreetmap.org/?lat=51.423296&lon=-2.835831&zoom=18&layers=M There should be 2 car parks showing on the stadium (left hand) but I can only get the small one to render. I've tried making it a higher layer which didn't seem to work so used an inner/outer multi-polygon. This worked for one of the two but not the other. I don't understand! Any advice please?