Try the procedures mentioned above. Remove the barreled action from the stock and see is the problem persist. If not, check the inside of the stock just above the rear trigger guard screw for any mold seam lines or burs. The rear of Accutrigger may be contacting the stock just above the rear trigger guard screw when the action is put in the stock and the stock screws are tightened. This will push up on the rear of the sear arm and also trip it into safe mode. Remove some material from the stock inlet just above the rear trigger guard screw so that the rear of the Accutrigger does not contact the stock.