Hi dmtr, if it is just damaged at the top then use a flat file on it and drag the fife upwards, that will help with the bur upwards so the nut can start. If you can't get the nut started the die nut is going to cause you similar problems, you would still have to work the file upwards to get it to bite without it cross threading. Better to get a file you can use often than a die nut you will use once
