My finishline primer gun which sprays great has come down with a problem. When you fill the cup the paint or thinner they will piss out of the nozzle. I was spraying when a stream of paint came out. I stopped Spraying and then started to spray again and it went back to normal. But then I filled the cup up with thinner and it pissed right out of the nozzle. To much beer maybe.(beat someone to that).