Apparently Terra got them to shake lose some gas blocks. I'm now waiting for the mailman to bring mine. Since it's been so cold and snowy (its about 5 degrees right now and we've had about a foot of snow since Christmas) here in Colorado I haven't been able to hit the outdoor range to try out the new trigger job. If the mailman comes before it's supposed to warm up over the weekend I'll have several new toys to play with. Come to think of it, I haven't shot it with the new muzzle brake and flash hider either.
Too much travel time, not enough play time.
Apparently sher did. I got to work this morning and my new block and piston head were sitting on my desk. They must have arrived on Monday.
I really like the new valve. It is not near as big as the early pictures made it look. It is extremely easy to take apart for cleaning and since my block will more or less be fixed due to the fixed muzzle attachment, a big plus.. This looks to be a great re design.