Hi Tizona ~~ You are absolutely right...it must be Pure gum spirits of turpentine. But even the other link (baar.com)that I posted is wrong because that one says *rectified* and it can't be rectified according to what people say on the Yahoo Group. (they are the ones using it successfully.)
I posted all those different options when I thought we'd all be needing a substitute of some kind due to lack of availabilty and totally got ahead of myself. Sorry for any confusion!!!
Here is one that is COSMETIC grade for artists...triple distilled >>>