Lovely looking motor Martin Congratulations.
Think I can clarify the point re waiver on the gap insurance. It appears all dealerships have to prove they have offered you the range of services to meet financial regulations, even down to being offered service packages and paint protecton.
Our family have had 3 new cars this year and had to sign a waiver at Mitsubishi, Honda and Alfa to stop the customer saying they had not been told about Gap insurance. Apparently plenty of people have been taking on deals and when a problem has cropped up like GAP tried to claim off the dealerships claiming they had not been told of the option. It was the first form to go through on 2 of the 3 handovers.