I need a chain splice not a back splice and it is quite physically demanding with all the cross whipping as you are lifting a couple of feet of chain all the time plus trying to get the links lined up. A back splice which is rope into rope is less physical but as I have 14 mm. rope, I have been advised that it could be too bulky to easily pass the finger.
Mike Hall has someone who used to work at Salterns who says he can do it. I will post how I get on.
If not, I have spoken to Jimmy Green Marine who will do it if I can get it to them. Could be an excuse for a couple of days in Devon ?