I live in Mexico and so have been using the DMP formula for slow-dry medium as all the ingredients are available here. It works great in that I get an open time of 5 days or more before the paint dries to the touch. However, the fumes from the venice turpentine in the medium are an issue for me in my small studio. I saw that Gamblin recommends, for a high viscosity slow-dry medium to use their Gamsol odorless mineral spirits with poppy oil in a 50/50 mix for a 4-5 day dry time and –– no fumes. Does anybody have any experience with this medium?