Hi I’ve managed to get through to Samsung about this and they agreed to send out an engineer as I also had another issue with my machine. They said that normally the warranty wouldn’t cover anything cosmetic but as they agree it is a design flaw they replaced my whole door so might be worth contacting them again. I asked for suggestions on how to clean it and stop dirt from building up again and he just said to try wedge a bit of card in the gap to scrape the crumbs out or seal the gap with sellotape all the way round the top of the door so nothing can drop in. Not really a great solution but it’s the best I’ve got and no sign of a replacement machine so sellotape it is!
