For years, I've had success using the laundry detergent in a water bath for stripping paint from prewar and postwar trains. But recently, that doesn't work when stripping a Weaver boxcar or recently some K Line cars. The current paint formulation must be different enough that even days in the bath doesn't soften the paint so I can scrub it off with a tooth brush. So, if you have had success with a stripping medium on current plastic shells, could you share.
Thanks