Alistair, I don't believe you are asking too much; however, it is an unfortunate fact that sometimes buyers are tempted by price to make an initial inquiry.
As the others have said, the time of year is not in your favour and my feeling is that this is probably playing a large part in why you aren't getting the attention the Aero deserves.
I personally found PH to be full of time-wasters (as is eBay).
It is really too specialised for Autotrader (imho) but something like Car & Classic and Classic Sports car would perhaps give a more focused audience. Even so, the jury is still out on these generalist forms of web sales.
Which leaves the specialist areas such as Miscellany, Talk Morgan and SOR at a Morgan dealership.
