Krylon Conservation Retouch Varnish Spray, 11 oz.

I used this spray gesso for about 20 years. I used it on plaster artwork to prep for painting with acrylic and oil paints thinned out with turpentine. It worked perfectly until they changed the formula. Now it breaks down and mixes in with my paint, especially when I use oils. It actually ruined about 30 pieces of art I was getting ready to put in a show. It even mixes in with acrylic paint if I have to work the paint. It shouldn't be called gesso if it mixes in with your paint!! Gesso is used to prime canvas to accept paint. They should at least change the label and say that you can't use it with oil paint or turpentine. There is a video on YouTube where an artist shows it mixing in with his paints. Does Krylon make a primer I could use in its place? One I could use on plaster, with oil paint and turpentine?