I had a couple of sets, but I think I might have put them somewhere safe....I will have a quick look shortly and if I have them I can post them to you, free!
Just found these little suckers while I was looking for a spare VHF microphone, I know it's been a while, but if you still need them I can post them to you.
No problem, I kind of thought you might have, when I installed my new VHF I put them in the box for some reason, I found them when I was looking for another microphone to test my radio.