If you can feel it with a fingernail, it's too deep for pretty much anything I've ever seen.
You can use touch-up paint, but I noticed theres a company selling a scraper/squeegee for touch-up use that eliminates the overcoating problems those little bottles seem to have... suposed to give you a very professional touch up result.
ANyone else know what I'm talking about? I Can't remember the company...
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Happiness is found with a larger engine.