part missing from NOS box - aack!

So there I was, merrily installing a "brand new" British Leyland AM radio, 
fresh from the box, into my Midget's console.  Then I discover that the "chrome 
trim" that fits around the radio bezel is missing!  So who do I call about 
THIS?   The chrome trim is the bit that actually holds the radio in place 
against the console, so I can't move on without it.

SO, does anybody have a spare original chrome trim?

Here is where the part lives on the instruction sheet.  
http://www.1978mgmidget.com/chrome_trim.gif
BTW, I will scan and post this document to my website at some point soon.

Thanks much,
Steve