Seems there's plenty of watchpoints to look out for. On mine, both screen retaining screws are the same length, although i've coded them to be safe. Also only one brass screw each side for the frame. Minimum goop in the channel too. Off to the glaziers with it today, so hopefully back in on the weekend. Terry's a great source of knowledge and tips- I don't think I'd tackle half these things without his guidance. He's als repairing my boss to retain as a spare, and supplying a new ignition mechanism. Highly recommend him for all things Morgan, from chassis up.