I changed my oil filter tonight. Easy project until... I replaced the two bolts. The shorter bottom one went in and tightened to 9 lbf/ft - no issues. However the top longer one seemed not to reach the torque "click" and felt like it wasn't tightening. I removed it and it looked like the attached. It looks like the bolt stretched... happy it didnt break inside. I have ordered another one, but was wondering what could have cased this. I checked the torque and it still read 9. in fast I tested the bottom bolt and that still measured 9. I put the bolt alongside (outside) the case and the unaffected thread is where the main crankcase is, so the "stretch" happened in the cover where there was no thread so it seems like this was a poor quality bolt. I'm hoping that a new bolt will be okay and that I haven't stripped anything inside..? Will a new bolt be okay..?