you can buy the 12 pt stud at autozone for 9 bucks...
look hard for it.... then you use a half inch socket on your tork wrench..
the first go round I had 42 pounds....on all 16
then when i pulled 90 deg it went to 80 pounds.. for that 1/4 turn..
then it wen to 90 plus for the next 1/4 turn......
they do make a noise... the noise you are hearing is the washer compressing and the bolt streching....its a snapping popping noise...
your old bolts are good save them... i might need them some day..