Hi Ed, Yes it proved ok in the end after a bit more brute force was employed.
I was glad I dismantled though as I found the reverse gear on the shed floor.. oops. Managed to heave it onto the car and just need one more drive shift putting in. I found that part extremely difficult.. one of em just won't go.
I dressed the end with a file and carried on.. but it is proving very stubborn.
All in all it has been like running a marathon. Definitely the dirtiest and most frustrating car task I have ever undertaken. Course it would have been a lot better if the differential hadn't dismantled itself.