Anybody ever stripped the threads on an exhaust bolt hole?? I was trying to get the damned manifolds on yesterday (they were a MONSTER hassle to get off) and the manifold holes don't line up with the exhaust bolt holes; the manifold seems to have shrunk by almost 1/8"! So, me being an idiot, got the first bolt in with manifold standing off by 3/4", then the last bolt in and started tightening and the #7 exhaust holes stripped on me! I took the manifold back off and retapped the #7 exhaust bolt holes. I also noticed that the threads on the bolts were flattened right out!! I couldn't even get a 3/8 nut back over them! Has anybody ever encountered this problem before?? I ended up just bolting the first four bolts per side and leaving the last two completely out since I couldn't get them to line up. (I am going to get headers installed which hopefully have holes that line up!) Do you think that the exhaust shop will be able to torque a bolt into the retapped hole or will I need a helicoil?