So I've managed to get some more done on this.
First up, sealed the saucer after opening it up for more light blocking, and given it some puttying and sanding. Not happy with the seams yet though, bit I don't seem to be able to get them any better.



Also, deflector fitted along with lighting. The deflector is clear bue inside and copper on the outside, it kinda works

LED tape fitted in the nacelles

This is the monstrosity I was going to use for the nacelles before I found out how cheap LED tape was:-

And finally for this update, repainted the Bussard collectors red again, think this coat is actually red all the wy though, the previous few have had clear spots once light was shining through them.

Question - Is Maskol any good for masking the windows? Going to need to start on that soon.