This was the result. Not happy with this, so am going to have to get some more board to cut curve to original length and re-do it. I needed to get some more anyway as I don't have enough for the rest of the dome. In the meantime, I started sanding the wood filler I'd applied.
Dome recess boxes:
I have been looking into how I am going to fix my Dome Rods that I made, years ago. These fit into three recessed areas, one either side and one at the dome rear. The side rods are the same the rear is different.
All three rods were machined in two pieces.This was due to the amount of material protruding out of the Lathe's chuck. Especially when producing the straight knurl, as the material is not cut, but deformed.