I’ve been searching the internet for a radiator cover for our slightly taller than average radiator. Everything online seems to be 80cm internal and 82cm external, our radiator is 82 internal so annoying very slightly too tall. Can anyone help!!? Any smart ways I can boost the height by a few cm? I don’t want to pay £150 for a custom one when the ‘average’ sized ones are £30 on eBay! Thank you in advance if anyone has any pointers.