I have now received several messages from Colonel Raul Diaz and have, more or less, figured out what happened.
Diaz was leading 'Oro' formation with #3 (Puga) on his right and #2 (Castillo) on his left. Puga shouts that number 3 has been hit by a missile (himself?) He actually means #2! This is why Diaz looks and turns to his right and sees a missile about to hit #3. He shouts to him to eject but the missile hits a moment later. These were the two AIM9L's fired by Andy Auld. Both these Daggers crashed into the sea. Castillo was killed and Puga spent some five hours swimming but eventually made it ashore and survived. Meanwhile Diaz continues his hard turn to the right and is hit by my missile as he is passing south. He ejects at the last minute and his aircraft crashes on land south of Pebble Island. Despite being badly injured in the ejection he is subsequently rescued and survives the war.
I probably contributed to the confusion as I reported I had hit "number 3", when in fact I had actually hit "the third Dagger". History then went on to record that I had hit 'Oro3' which was also incorrect!
Many thanks again for the replies and information. If anyone has any photos of the wreck sites I would be very interested to see them.
ES