Does anyone know where I can get one of these adapters reasonably cheap. I have one but its stuck inside an EOS camera adapter and wont budge. I sold my MPCC Mk3 to someone but I forgot about this adapter. It wasn't until he mentioned it that I had a look. Unfortunately it wont budge so I need to find a replacement. I have tried all sorts of methods to remove it, but that's not the idea of this post, I want to get another one as a replacement.