so I'm slowly rebuilding my transmission in my si and was replacing the final drive gear on the diff. there are ten 14mm bolts that hold it on and this is where my question is. are those bolts one time use? because it looked like there were like no threads left on them when I removed them...I'm just puttin new ones in any way but just wanted to find out to inform people who haven't had to rebuild there trans yet and are wanting to do it themselves if they ever have too.