Thanks Marq,

Your theory holds well with what I was thinking was a good possibility for my matte finish. It is Rusto Red with mineral spirits. Further, on previous coats I didn't thin at all and got a glossy but very orange peeled finish. Of course, I had to sand like crazy to put on the next coat. So, I believe the paint is behaving as it is supposed to. I may have it too thin. I didn't get roller marks at all. I'll keep playing. Thanks.