I was making a klickie conversion and decided I wanted to strip off my paint job and start again. I used a UK paint stripper called Nitromors which I've used on plastic 54mm figures with no problems. BE WARNED this stuff eats the plastic klickies are made of. At the best it will soften it and, if you leave the figure in it too long, will melt the arms and legs. I manages to salvage the body and head of my figure but that's all.