I have another 4m that someone has repainted. When I put stripper on it, the first coat came off revealing a second coat that is a kind of blue/grey color. This paint is THICK!! The top has large cracks in the paint as if it shrank. The stripper (Polystripper) won't touch it. I tried using a heat gun, it bubbles a little bit then starts to smoke and char. Almost as if it's igniting. It does loosen up abit, but is still a bugger to get off, and this was just the lid. I'm thinking this might be lead paint, and maybe I should get it beadblasted rather then do it myself.......