Got this in yesterday: I tried sanding at 400 grit to get some of the tool marks out. Too slow. Then went to 320 grit and went a little quicker. Ran the body under the tap and the grain instantly popped up so I sanded it off at 320 wet. There are still a couple of tool scuff marks on the maple top so maybe I wet it down and sand at 320 again? I'm concerned that the body might dry out too much and crack or something. Can this happen? So should I sand wet at 320 again or go straight to 400 dry and then 600 grit? I've never done this before. I'll be hand-rubbing a Tru Oil finish into this one.