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So once you had the pilot holes drilled what course of action did you take? Did you just keep increasing the hole with larger and larger bits until you reached the threads? or did you use a left handed bit?
you also mentioned earlier different methods of annealing and hardening did you actually do any of that? I just want to make sure I have the right weapons before going into battle on this one. So that if even only one bolt breaks on the headers what would be all the tools necessary to get that ******************** out. (god knows I hate easy outs and have not worked for me yet.)
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