When the antenna of my small television in India broke, I looked up the relevant part's number in the manual provided by the company and wrote to them asking for a replacement. When the package arrived, I was furious to see that they had sent Part No 699 when I had actually asked them for No 669. I shot off an angry missive to their Public Relations Dept. Their reply: Turn it upside-down.
(From the "Rest" of RHF)