So the Cords rings arrived today, fitted all and put the pistons back in, then spent the afternoon assembling all the other bits with everything back in place.
Did as the book said, turned it over with fuel cut off, then with the fuel on, started up a treat, couple of test drives, checked the fluids, smokey as all the oils and ****e burned off, now almost stopped smoking!
Slightly longer test drive tomorrrow, Cornwall here we come, slowly of course, plenty of stops and fluid/leak checking!