Just sanded down a Fender Jazz Bass neck to be refinished. This is a first time for me and I want to learn to do it correctly. I did have to use 80 grit to get all the old finish off which still took a lot of elbow grease to do! Now I want to properly prep the neck before I start spraying the finish. I have plenty of wet/dry sandpaper from 80 grit up to 5000. I also have some StewMac grain filler, nitrocell Sanding sealer, Aged brown nitrocell (for base color) and nitrocell satin finish for the final coats. So do I re-sand the neck in finer grit stages getting up to real fine grit paper before using the grain filler or leave it raw as it now is? Also when using nitrocell, if after spraying there is some orange peeling do these need to be sanded off right away or does multiple new coats of nitrocell keep layering and just the final coats need to be sanded smooth? Any advice and tips would be greatly appreciated, Thanks!