Sorry you've had no replies. I've never done this. Have you ever cut a thread before? Maybe your record pista cranks aren't the best place to have a 'first go'. Have you tried screwing in the crank extractor and seeing how far it goes in easily (don't apply any pressure)?
Sorry you've had no replies. I've never done this. Have you ever cut a thread before? Maybe your record pista cranks aren't the best place to have a 'first go'. Have you tried screwing in the crank extractor and seeing how far it goes in easily (don't apply any pressure)?