Just to be clear. The lid is steel that is coated with porcelain. There is NO Paint on the lid when it comes out of the factory. The paint you will use will just replace the porcelain that is missing. I have never seen uncoated steel on the lids before. Usually, it is a result of some of the porcelain chipping off. That happens on the edges and around the bolt holes on the lids due to dings and tightening down too much on the end cap bolts. Since it is porcelain, it is basically glass and while it is extremely hard, it is very inflexible and will crack or chip very easily. If it is under where the endcap covers, it shouldn't be a problem.