E,
I have tried them all. Both before and after having it worked over at the factory.
The slide is now like a race gun. Smooth as butter. Last time out it did run MUCH better and it was with bulk type ammo (Remington). So it has my interest again and next time I go I'll run it some more and keep y'all up to date on it.
Bottom line though, is it had to go back and I now have 3 or 4,000 rounds since the rework and it is only now starting to run.