mreeter, I am glad that you do it carefully and do not ruin the temper. To get the right finish on it you would have to use a polishing wheel and jewler's rouge. What you are doing is clever but even if you don't take the temper out of the metal there is no way you can do it perfectly concentric.
This thread is about unipivots sitting cockeyed, a common problem with unipivots. My point is the best way to deal with this problem, and spike wear is don't buy a unipivot arm. They are way too much of a compromise even the Grahams. VPI now makes a very nice looking gimbal version of the 3D tonearm. Get that one = no more headaches.
If you really like spikes get a Kuzma 4 point. An interesting point. The 4 point arms actually sit on one point ( the horizontal bearing) and I have never heard of anyone wearing one out. I guess Frank's metallurgy is better.
