Hello, A couple of years ago I managed to buy, from a well known shopping website, a full set of rubber seals taken off of another copen. As yet I haven't had the courage to swap them over with Red Noddys' existing ones. The reason being that I don't know how to get the replacement seals to stick on, or if they need to be stuck.? If anyone can advise that would be marvellous. Thanks in advance.