I think comment 4 adjusting the over travel screw is the first thing I'd look into!
But here are my thoughts.

1. Not to insult you (because it took me a minute to realize at first) the trigger has to be pulled while pressing the bolt release.

2. Did you check without the stock to make sure when it is being pressed there is enough clearance to move freely?

3. When I installed mine I had to play with the settings until everything functioned the way it's supposed to. Was this an issue before you shot it? Maybe something moved under recoil?

4. Mine is set in between 2-2.5lbs I could not get it any lighter and still have everything function properly. You may have it set to light or you may need to adjust the over travel screwto gain the required clearance.



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