Little Al
Addicted to ArboristSite
If the die's you have are the type that open enough to fit over the thread fitting it to the thread right by the taper set to the correct clearance &wind the die off rather than trying to start & wind on as with the mushroomed out thread on the crankshaft end the chance of cross/ knackering the thread is increasedI have the same snap-on thread files that Harley has.... they work great ...also have the snap-on set of split die's ..I would try the files first get the nut started run it top to bottom a few times..... good luck....