I recently purchased a used set of Titleist AP2 712 irons and two of the irons (3-iron and 5-iron) have some spots that are now missing the black paint (F and G in Forged, and 2 in 712 on hosel). I'm guessing I can use auto touch-up paint but is there are a recommended method for getting the F and G...they are quite small and intricate. Did someone find a good method or brush size for getting in there? I read that this issue is common, and not just in Titleist clubs, but aside from saying "use car paint" no solutions I found say how to apply the paint. Any recommendations and advice would be helpful. Thanks.