It still is not working. I did confirm the problem is the slide locking back. I can hold the slide stop down and this fixes the problem.
I have also been told that the slide stop should not come out as easily as it does during the guns take down, it almost falls out.
So after a call to CZ I have a new slide stop spring on the way. We'll see if this works, If not I send it to them to fix.
I gotta say that CZ USA is a top notch company to deal with. They are by far the best firearms company that I have ever delt with on the phone.