It must be over 10 years ago that the Vari-X-11s got click adjustments. If that is a Vari-X 111 it would have to be real old. Unless you can get it for next to nothing don't bother. Your money will go farther on something a little more current, even a VX-11. Better coatings, click adjustments and all that. Yesterdays treasure isn't necessarily today's bargain. Course if you already have one thats a different thing all together.
Dogleg