[ed morini]

I don't like the odorless thinner... doesn't seem to work well in making various concoctions, although it is supposed to be more refined..probably just me

Mineral spirits is usually marked as such. "Do It" hardware stores sells the Sunnyside brand of thinners, from what I've seen. Pure turps, mineral spirits, Vm&P Naphtha (varnish makers & painters), are all readily available.
I've used Vm&P Naphtha to thin spar varnish frequently, but it does speed up the drying time depending on ambient temperature, it's more refined than Naphtha and has a very low flash point.

If i can be of any further help... sing out

Ed