[capta]

I'm in a similar position, only far from a paint store where I can buy polyurethane paint thinner at any price. If the composition of a paint is oil based, then I think it's OK to use turps or kerosene, but with the polyurethane paints I'm not at all convinced that either would do the job. It has been suggested that xylene may work, but that's no more available where I've been than the right thinner, so we are going to have to wait for Rodney Bay, St. Lucia.