On my workbench...one Atlas/Kato SD-9 and more important, a Kato made GP38-2 which should be painted from CSX blue & gray in CP Rails "beaver" scheme... Okay, the newer Atlas GP38-2 looks finer and has more details but, as my nickname shows, I like the GP38-2 and have 17 Kato GP38-2's (some stored with broken motors or other mechanical failures), paying never more than 20-35$...photos of the newest addition will follow...
my experiences with isopropanol or 98% alcohol are actually not too good. makes kato shells very brittle. i broke a few f40ph shells. since then i use scalecoat wash-away. soak the shell and immediately start rubbing off the paint. might take two rounds. rinse the shell with water once you're finished.