I think your experience and knowledge of the K0 has warned people Ash. Well done, nobody should get ripped off if they read your comment.
I have a K6 (or I think it is, I'll have to check the engine numbers as it's up in Glasgow at the moment in bits!), At least it won't need a seat when I get round to restoring it as it's a Rickman CR750 with a bit of history behind it.