Did you sign up for the free Lawgistic's membership when you joined Car Dealer Magazine? It was one of the benefits!
Might be worth a phone call to them for some advice as this sort of issue is right up their street. I think you get one free phone call from memory?
I offer my own warranty which the booklets come from Lawgistic's, and have been written by an ex-trading standards officer. They're very good... you might be wise to look into them for the future.