i managed to cook mine in scotland, i bought some ones off ebay but they are too big for the exhaust. Can you buy original ones or ones that are the right size.
Try the Image Works at Ilkeston in Derbyshire Tel: 0115 944 3111 or web site at www.the-image-works.co.uk. Made some up for me are competative and heat retardent.
i managed to cook mine in scotland, i bought some ones off ebay but they are too big for the exhaust. Can you buy original ones or ones that are the right size.
If your still stuck give Nattyboy a shout he's got several sets..