I have a Sako Hunter in .270 Win. Bought it about a week before I got married back in '88. Very accurate, but I have not carried it for a few years. Took it to the range and could not get any kind of groups out of it, it had been the closest thing I every owned to a "one hole'r". I was cleaning it tonight and noticed the barrel and action is sliding back and forth about 1/8" in the stock. What kind of tool do I need to tighten the action to the stock on a SAKO?