Another hint: if you haven't done so already, try posting on the Keypulishing forum about this:
Key Publishing Ltd Aviation Forums - Powered by vBulletin under 'Historic Aviation'.
There are a lot of people on that forum who tinker with Vampires/Venoms/Doves etc.
Edit: It seems that someone else has copied your message to that forum already:
Help needed Vampire nose legs.. - Key Publishing Ltd Aviation Forums