Peterh337 - said kindly but sometimes the time comes when you are far better off having the whole thing redone. I spent a few happy years "touching up" one particular aircraft and when it was finally resprayed (professionally) wish I had had it done a few years earlier. Moreover I think a patchwork of areas "touched up" complicates a complete respray requiring more preparatory work if a really good finish is to be achieved. Just a thought but the point comes when this may make more sense.