OK just got back worked on it the whole time.
Ammo is ok, works fine in my friends 41.
Cutting the spring accomplished nothing , I kept making it smaller with no improvement untill it now won't go into battery. No big deal put another spring in. This is a friction problem, there aren't many parts to this but I have yet to spot it.
Tried again with five rounds and the first of the five is not even cocking the gun, so I'm thinking it's getting worse. That may not be so bad , it will show up at some point soon.
To eliminate magazine questions, I removed the mag interlock and shot it as a single shot with no magazine in the gun, same results. First shot didn't cock the gun next few stovepipe. I guess I will start focusing on cocking the hammer it feels smooth but who knows what it's doing at speed.
Thanks for the help, Tom