There was an excellent thread on this topic a couple of years back with good suggestions from a number of individuals, including Paul. I don't know if Paul would be able to resurrect it or if it has now receded off the board. That would certainly be the best bet, thought the individuals who responded can certainly do so again. I was not one of them, unfortunately. I have not faced this problem and original paint is usually applied in a thin enough coat that you can just paint right over with a new paint scheme. Argonauts are the only models where I have encountered excess paint that obscures details.