i have a savage model 93 .22 wmr that misfires about 3 out of 10 times it has been like this since it was bought.so i just put it away and just took it out again recently,4-5 years later.it is very accurate shooting quarters at 75 yards.has anyone had similar problems or know how to fix .i was told to take apart the bolt.strech the spring,but i cant see how to take it apart.