Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
If you scroll down to page 7 you'll find N7775C - could that have been it, Kevin ? (N63L seems to have the same paint job as yours...)
2. is the reason why it is suspended vertically on the wall of the Edinburgh museum that the curator thinks that the vertical lift comes from the Pobjoy engine and propellor and that the rotor blades provide the forward momentum?