The door on my Hotpoint SDW60 slimline dishwasher won't shut. The lock clicks but won't 'catch' properly and so the door just springs open again. I replaced the lock (within the door) last night but that didn't fix it. Could it be the metal loop on the machine itself that the lock engages with that is at fault? It looks perfectly normal to me but I'm no expert! I've checked all around to ensure that the rubber seal hasn't come loose and thus isn't preventing it shutting properly but that appears fine too. Any suggestions would be greatly appreciated! Thank you.