Hello,

Here is a fairly comprehensive site by a model railroader about stripping paint: Strip Paint

I have used Chameleon Stripper and it has worked as advertised. Note that though a bit $$$$, it is reusable.

It can be bought at Walthers.

I Use Castrol Super Clean (and the cheap Equiv) with good results. Just soak for a day (sometimes more for stubborn paint gently scrub and rinse off!!