I think that I have successfully completed the puzzle but am baffled by several wordplays.
For example: Donkey or train? D*P* I can only think DOPE but not a clue as to why it's correct.
And : Where winds become draughts? HORSE LATITUDES Not a clue about that one.
Not a big fan of Dean Mayer, but the prize on offer isn't to be sniffed at so I just grin and bear it.
Sorry for being a bit of a grumpy old bugger.