Doog: Thanks for the tip. I initially started a chipping process but soon found I was doing more damage than good. It is either a fine motor skill issue on my part or I am using the wrong tool. I was using rounded blades held at about a 45 and scraped downward. i was probably applying too much pressure as the areas either became too wide or penetrated down to the primer coat.. More practice is necessary I think. When you say pick, are you talking about tooth pick, a metal olive pick, or something larger? What does the blade on that look like? Anyway, read your article and was very impressed.