This is exactly the 3 suggestions I tried, and I ended up with #1. It works great, and I don't think Sheldon would have listed it as a possible fix if it was a bad idea. If it were a bad idea, I think he would have said so, and suggested not doing it. In the end, you have to make your own decision, but I finally made mine and will never look back...I've put aobut 3,000 miles on this set up so far and haven't had a problem. I can also attest to the fact that the original threading is only 15mm deep, so you will have at least 5mm of completely new threading,

Juan