From your photos my advise would be: sort out the shallow dome before you cast, don't cast with the ears on. This will make the process much easier...(and speak to the guys at Tiranti's )
Hey TF, bumped into one of our laminators at work (Boat builders) and told him of my issue.. looks like I have found an in-house solution to my casting problem?
So not long till I get this thing cast and ready for painting.