Originally Posted by
Reynolds
If it's only the first and second thread, and the rest are OK, you can remove them with a bench grinder (slowly, taking care to not overheat them) and still have plenty of threads to support the cups.
Just happens I gave it to a friend to try and turn the first couple of threads off with a carbide bit on his lathe. He also has a nicer bench grinder than I which is his last resort. I hope to hear back from him soon. If those options don't work I will have to buy a used cup or set so I can get this built. I am getting anxious to finish the bike.