Joe, I'm baffled too. I've not read a negative word about Mission Models paints. A couple folk here swear by them.
I did add a bit of Polyurethane, and that might account for the funny opaque properties when I started spraying. It started on my test spoon. Why I was dumb enough to move to the actual door panels is beyond me.
Mission Model FAQ's are inconsistent. In one place, they say 1-3 drop poly to 10 drops paint. In another, they say 1-3 drop poly to 30 drops paint. Vallejo does this same thing, inconsistency among written instructions. I don't get it. They are talking paragraphs to proofread, not volumes.
Another thing, Mission Models are emphatic about not mixing in the a/b cup. I refuse to mix in a mixing cup (I'm a modeler, Jim, not a chemist) , I wonder if that might be it.
Sorry, I'm getting carried away. I'm hoping for a MM user to pop in here and straighten me out. Like you, I want to like the paint.
Thanks for your words of encouragement, Joe. And if I helped motivate you, I'm pretty happy. And you're right, I can touch this up and button it up.