Yeah, to be frank I'm kind of on my last straw with this system when it comes to reliability. As it stands right now I have a new bolt in place (and them sending me a replacement), and I'm hoping that both the newer ejector and extractor spring/o-ring washer will prove to be the trick. But if it starts acting up again under 1000-1200 rounds, then I've enough and I'll go back to my regular blowback setup which I had gotten quite pleasant with a combination of hydraulic buffer and spring setup, and was dead-nuts reliable.
I think it's a very clever system and certainly has its benefits on shooting and traceability, but I get the feeling that it's putting opposite forces on the traditional AR-bolt setup that it wasn't really designed for. And then instead of a longer case to 'swing' out with more torque, you have a squat little case which just stays around until it sort of trundles its way out at the rear. But I really hope now it stays reliable. I can handle a spring replacement here and there every 1000 rounds, but not the mystery of if it'll make it through a match along the way.