First block sanding with 180 grit . Nice and flat except for what looks like two thumb prints at each rear corner . It will get primed one more time and then blocked wet starting with 400 then 600 then 1000 ,that should take out the two marks at the rear ,if it doesnt i will leave them because i will still have to block sand the mold and they will then be a high spot and easily sand out and them buff. ,still have one scoop to block but my fingers are raw and burn like fire