The pine-sol works great. I tested a scrap peice of plastic with different things before the real work, and a 1oz bottle of Thinner, from HoK (the current Wal*mart paints) stripped it almost immediately BUT it left the issue of cleaning up the thinner! It did NO damage to the part, its still smooth. But the Pine-sol is cheeper!
One issue, is layered paint. I have 3 shells right now, the Bachmann shell is slow, the paint is sticking to the groves. The Athearn shells were primed, painted, gloss coated, decaled & dullcoted, it has ripped the clear coats off and the decals, but the primer/paint is slowly chipping away.