Some car nuts turned me onto a product that works wonders..If you have used evercoat before you know ,if you haven't I'm just sharing.I have a 129 in process of refurb. but the hood had quite a few pits that I couldn't get to fill with primer enough.Evercoat is a glazing compound that is mixed like bondo and is spread the same way. It sands like drywall joints,a super fine dust. It fills the those pesky tiny holes and is as smooth as glass finished....if the pic shows good you will see lots of dots of white that are filled holes.....caution it hardens fast ,spread quickly and thin..