The metslider on my webpages vantage theme has changed

Can soneone have a look at my site you will see the height of my metaslider has got bigger. I normally have a guy lok after my web but cant get hold of him can someone tell me how to reduce the height of my slider

I have gone in to admin into metaslide and it says it is 1080 x 420 but the actual when you look at the site is different

Thanks
David