I also sanded the primer back off on parts of the hull that I wasn't happy with, and refilled these sections, which so far is looking better. Also made a start sanding the warp nacelles.
Now, I'd made a start sanding the top saucer section, and it quickly dawned on me that I could well spend the rest of my life on this part alone, its hard work. After a trip to the garage to scout out a better way of doing it, I came across some much harsher sandpaper than I was using before, which has made life far easier. It's still damned hard work, but I least I stand a chance of getting it finished before real starships are being launched.
It's getting there, slowly.