Very light sand on the neck to 600 grit, followed by a final coat of satin poly - so happy with the way the neck is coming up now. Looks good, feels awesome. I may give it a light polish with the rest of the guitar to finish, but I'm really happy with it now.
I don't have so much as a work bench let alone a scrap of wood to practice on. And now you mention it Rabbit, doing the 'trial' on the instrument itself seems stupid! But so far, things are coming together nicely.
Final gloss poly coat on the headstock face tonight, then figure out how to level sand and polish everything!