I had the same problem with the lug bolt. It took two of us with an impact hammer and wrench to break it loose. Upon inspection, the lug nut had Loctite on it. Once we got it apart and put a new trigger spring in it to get the pull down to two and a half lbs we shot a fantastic 5 shot group out of the 7-08.
Some patience, tapping on the driver with a hammer, and a little Kroil seemed to help. I normally manage to screw up these jobs with a lack of the first part. It had a dab of Loctite from the factory, it appeared. I need to find a remedy for the trigger next.
