Ok, take the action/barrel out of the stock and looking at the rifle with the action being on your left and the barrel on your right, look down at the trigger group. Right behind the trigger you will fine a screw with a nut on it and some type of glue. What you want to do is loosen up the nut and turn the screw counter clockwise a little pit and then try the safety and see if it works. I'm assuming it doesn't work when its out of the stock either, is that correct. This screw is for the creepl, but I do know that if you turn it clockwise to much the safety doesn't work. Just try it a little bit at a time. If that doesn't work then set the screw back were it was at the beginning, don't forget were that is. By the way in front of the trigger group is another screw/nut and that controls trigger pull. If you want to lighten the trigger pull up then turn the screw counter clockwise.
Get back with us and tell us what happens.
dbuck