Cheers for all of the replies,
Del that's awfully kind of you, unfortunately I'm in Yorkshire so I doubt I would be anywhere near Essex anytime soon.
Unfortunately the staves came debarked when I bought them, so I had little influence on that, thankfully they were relatively inexpensive. Never come across sealing the back of a bow before I always heard about sealing the ends, something to remember.
Would I be able to use the stave as it is for the back of the bow, or do I need to chase a ring? If so Should I reduce the bow closer to the working dimensions or do I need to do the whole stave?