You don't need a finer rasp. Just lighten your touch when you get the profile right, and reverse it across the ridges you left behind, then use a scraper and sandpaper. A scraper will take those grooves off pretty quick.
thanks that really worked great! within two hours i have the neck in a great shape and now its supersmooth thanks to the superfine sandpaper sanding

how do you apply tung oil? with a paint brush?
ps: its got a spector/warwicky kind of a tone which is a great change from my usual fender style


i think tung oil is a good idea, i just gotta soak a rag in it and then wipe the neck, that simple!?