Backstory: -Stripped painted Alder body using heat gun and scraper -Orbit sander w/ #220 -Hand/block sanded w/ #320 -will be dyeing w/ analine wood dye I am just not pleased with the sanding results from the #320. Any downside to starting over to 220 by hand? My main issues are the constant white blotches that have shown up and will not sand out with #320. The end grains have this sort of wave pattern and there are small scratch marks where the waves switch from down to up. Should these be sanded with the grain or should the entire ends be sanded horizontal to the rest of the body? *I change paper and have popped the grain a couple times.